Age Word Problems - MathHelp.com - Algebra Help
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- Опубликовано: 11 сен 2024
- For a complete lesson on age word problems, go to www.MathHelp.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to solve "age" word problems, such as the following. Bret is 3 times as old as Laura. In 5 years, Bret will be twice as old as Laura. Find their ages now. Note that this problem requires a chart to organize the information. The rows of the chart can be labeled as Laura and Bret, and the columns of the chart can be labeled as "age now" and "age in 5 years". The chart is then used to set up the equation.
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3x+12=2(x+12)-1
3x+12=2X+24-1
3x+12=2x+23
3x=2x+23-12
3x=2x+11
3x-2x=11
x=11
Here we go!
Thank you !!
Hot fo sho
Sir/Madam there is a shortcut
''3x+12=2x+23
Instead solving that no longer you could have done
3x-2x=23-12
X=11
this is soooo much more better than listening to a lecture and taking notes....i love these videos
@@tooning779 what's wrong with it
The fuck ?????????
3x+12 = 2(x+12)-1
3x+12 = 2x+24-1
3x+12 = 2x+23
3x-2x = 23-12
x=11
Thanks
Ty
Thank you :)
Thanks!!
thanks
moderate and consistent speed of teaching is the only one works for me and this guy defines it it's so calming listening to his voice. he can make me sleep and still gets what he said in the morning
Me in 2021 the night before a math test trying to study watching this guy
me in 2024 the morning before a math test trying to study
if all MATH teachers are like you, then i have no reason to hate math!!! thanks for making the solution in a simpler form rather than making it complicated!!:)
This is so much better than my Math teacher
I've been trying to figure these types of questions out now for the past 8 month and I'm nowhere near to understanding what this is all about. No one thinks like this in real life. This did not explain nothing to me. I'm not getting the logic as to what he's writing. Who decides where to put what on each side of the equal sign. And he should have at least answered the complete equation step by step.
8 months? bruh what have you been doing, falling asleep in the middle of every lesson?
@@oddyseyofminds FYI. I'm not in school. I'm learning this on my own time. Besides I haven't done math in over 40 years so it's safe to say that you lose and forget this stuff overt time If you don't keep putting it into practice. I majored in criminology not math.
@@scorpiostwo I'll help you if you like. It is a logic that if followed by society there would no political, economic or social problems. The plain exercise of pure logic would solve all problems. There's a philosophy and psychology to this that he does not get into and it would be very helpful.
If you can get a copy of Rene Descartes (16th c. mathematician), Rules for the Direction of the Mind, it would be helpful in realigning your thought process to adapt and incorporate "algebraic thought". The math and science folks of the Enlightenment went into great detail philosophizing about the impact and purpose of the sciences in a non-science language.
For starters, Mary has an algebraic age. Yes, you are right no one thinks like this in the real world. It's why the world is in such a state of dysfunction per Descartes. Mary's "algebraic" age is independent of what her actual age is. Do you follow me? Her algebraic age is stated in two different time periods which he charts as AGE NOW and AGE in 12 YEARS. FULL STOP!!!
Think on the significance of that statement and forget for a day or two the answer. The answer is irrelevant. It is the process, the method, the algebraic symbolism that is most important. The answer will always follow as a matter of fact, of following the rules of algebraic thinking not a fanatical or childish desire to get the right answer. Try to express everyday actions in your life in algebraic FORM! Part 2 coming up!
Interpreting word problems into algebraic expressions can be difficult and it's recommended to practice several examples.
For this particular problem, you're considering two different instances in time: the present and 12 years into the future. Setting up the chart as indicated in the video is useful to organize the information you're given.
In the present, Mary's age is 3 times her son's age. This means that whatever age Mary's son is, she is 3 times that number. Let's let X represent her son's age and 3X as her age (in relation to her son).
12 years into the future, the second scenario that the problem inquires, Mary and her son both have aged as well. This means that we must adjust our given information. The son's age is X+12, and his mother's age is 3X+12. IN THIS SCENARIO (12 years into the future), the problem informs us that, "Mary's age is 1 year less than twice her son's age." Again, we know that at this time, the son's age is X+12. We can COMBINE this information with what the question provides us to get the expression 3X+12=2(x+12)-1, as solve for X, the son's age. The son's age should come out to 11, and his mother's will be 3 times this amount, which is 33.
@@WiShInGdRaGoN1324 The only part I don’t get and have been stuck on is, why do you multiply the 12 as well?
So we know Mary is 3x and son is x, in 12 years you add + 12 to both, I get that. But if you are going to multiply by 2 because Mary will be 1 less than TWICE her sons age, why would 12 be included in the parenthesis? 3x+12=2(x+[[[12]]])-1
I see no reason you would have to multiply 12
Multiplying the x by 2 however, makes complete sense.
I gotta say thanks for this. Without your help I couldn't answer my exam with ease! Thank you very much! Now I'm hoping to have
70+ over 100. :))
well, I certainly need this for my algebra assignment! thank you so much! :D
this dude literally solves these equation with ease
my prelim grade in math is 70 - - - - - - midterm grade 71 - - - - - - - - final grade(i didn't listen to my instructor but everytime she gives new lesson i started to watch here at youtube rather to listen to her i got the grade of;) 85...
You could have been more detailed in explaining why you answered 11, and why 33.
ladyreith that's Simple math. If x=11 and Mary's age now is 3x then than means Mary's age now is 3(11) which is 33
@@hyperbeastuc4179 NO How did he get 11 via
2(x+12)-2
Yeah that's where he lost me too
@@carliandelacruz7404
You mean 2(x+12)-1
its gonna be
3x+12 = 2(x+12)
2 times x is 2x and 2 times 12 is 24, bring down -1
3x+12 = 2x+24-1
3x-2x = 24-12-1
x = 11
@@andreichua3897i forgot but why does the “12” go after the “24” and not before the “24” in the same spot as the “2x”?
ur voice is perfect for teaching i wish my math teacher would also hav voice like haha
This thing too, A square and an equilateral triangle have the same perimeter, the sum of one side of the square and one side of the triangle is 28 cm. find the length of one side of each
These videos are always helpful.
this helped me out so much, thank you !
I gotta say thanks for this. Without your help I couldn't answer my exam with ease! Thank you very much! Now I'm hoping to hap 70+ over 100. :))
i found this very helpful!
Thanks sir.
I was having problems with these since Grade 9, and I'm in Grade10 now.
Our teacher gave us homework on this, and I was lost.
Your video helped a lot
Thanks.
I LITERALLY LOVE YOU
@cwalkmonthly 3x+12=2(x+12)-1 leave the left equation, and distribute the 2 in the terms in the bracket
3x+12=2x+24-1 take the variable to the left and numbers to the right
3x-2x=24-12-1
x=11
@tamoniva12 here..
1.) 3x+12=2(x+12)-1.....(you multiply what's in the parenthesis first and you get 2x+24)
2.) 3x+12=2x+24-1 (here you bring the 2x to the left side of the equal sign. which makes it negative, and that makes 3x-2x=x. But then you also have to bring the 12 on the right side of the equal sign which makes 24 turn into 12 which leaves you with x=12-1)
3.) x=12-1
4.) x=11
wow, the chart method really IS good. Thanks alot. Though I didn't have so much problem with these but there was always a confusion which you so easily solved :)) Thanks a tonn!!!
Thank you! This helped A LOT. We are having this kind of topic in my Algebra class, having me searching for a video like this. Thank you again, this really helped. ❤️❤️❤️
~Zayne❤️❤️❤️
THANK YOU SO MUCH❤️❤️❤️***
Thanks to your math video tutorial. It's like that I'm having a free private tutor at home. Thanks a lot!! :))
This video explained this process better than my real math teacher!
Practicing algebra is better instead of using your phone for music and unnecessary things like a game etc. My parents should have named me Timothy or Thomas hernandez.
Thanks for all your RUclips posts! Appreciatedddddddd!!!!
THANK THE LORD THAT YOU EXIST!!!
Happy New Year!!!
My New years's resolution is to hopefully improve in math
Thank god! Finally you are the one that i've been looking for since all of the others are Indians and i don't get their method.
This video was extremely helpful. Thank you!
I GET IT NOW O: my algebra class has had a really hard time with this, but this helped a ton :D thanksh so much
this guy is the shit men, i dont know what i would do without these videos,its like having my private tutor at home, thanks dude
Thank you this helps me a lot for my exams
this question is part of previous year paper of 10th no
Nicely explained...
This super helpful. Thankyouuu.
u earned a subscriber
OMG! Mary is 45 this year guys! Wow her son grew up as well! Hes 23 already!!! Time flies, man!
Ahahha
Thanks! Easy to understand!!
you are the best!
epic math teacher!
Hope i will have a great mark in th exam thank you for this!
thank u soo much!!! u saved my life!! tomorrow i have exam and its over 9pm here!! "-"
Thank You *-* this is much better then my math class in school :P
Thank you!
I didn't expect it to be shown from such a long time ago
Why dont you just ask Mart how old her son is? haha. Thanks. This helps a lot :)
you ask
@@mohamedrasheed49 no you
Thanks for this video :-)
It helps me a lot :-)
it was thoroughly explained very good teaching
This is so helpful. Thank you so much!
Thanks so much!
Thank you very much sir! I totally understand you than my math teacher (well she's good too but yeah). Going to do my assignment about this right away! :D
IT WAS AMAZING
Well explained sir
wow. .i dont know about the others but you just gave me ideas on how this works. .thanks. .i now understand~~
Very helpful , thanks!
3x+12=2(x+12)-1
3x+12=2x+24-1
Use transposition
3x-2x=24-12-1
X=11
Thankyou so much 🤩
Where do you get the 11? and where do youu get 33? please substitute
Order of operations
Parentheses, Exponents, Multiplication, Division, Addition and subtraction
I always remember it by- Please excuse my dear aunt sally
A VERY BIG THANKS TO YOU!
Could you help me with this problem? I really need your help Antonio is as old as the combined ages of his two brothers Bendito and Cristiano. But Cristiano is two years older than Bendito. The combined ages of the three brothers last years was 3/4 the combined ages at the present. How old is Bendito now?"
Thank you so much that helped me a lot
Thank you so much!!! You helped me a lot!! Now I can solve age problems easily because of you. Thank you sooooo much!! I want to be your student someday. :D - Thanks again!! :))
Why do you use the 3x+12 for the age now?
These videos are a better teacher then my algebra teacher.... This guy is saving my ass!
I'm just a tad bit disappointed that you didn't explain the part on how 3x+12 is x=11
thank you so much
Amazing!
Thank you 😊 sir
ok this helps a lot buuuuuuutttt is this a short cut?Because it seems like it.
thank you
Four years ago, Jane was twice as old as Sam. Four years on from now, Sam will be 3/4 of Jane's age. How old is Jane now?
help pls
or you can set up 2 equations:
s3=M
+12 M -1 = S2
And do elimination.
thankx alot great help
Thanks
this is a really good one but im still trying to keep up with this kind of method?
3x+12= 2(x+12)-1
3x+12= 2x+24-1
transpose
3x-2x= 24-12-1
x=11
Thank you this helped me alot
Sum of the ages of boy and his sister is 32 years. The boy is 6 years older than his sister. How old is his sister?
Please
I am planning to join the army. And I am so bad at math. The steps you did I get it but the last step to get the answer how come you don't show it?
It really helps for my math test tommorrow!! :) Thanks
lol my test is also tomorrow
Same here
Thanks man
Could the teacher smile a little bit? :)
Your awesome man
Thanks!
idk this is kind of confusing but I think once you know whose the [ x ] and if the question has [ less than twice ] or alike you can do this instead
12 - 1 = (Son) x 3 = Mary .. I need to see a question that says more than twice or alike to see how it will fare ... its just what I think no need to follow.
how did you get x = 11??
Thanks F -- You halped me save another video!
really helps
dude, help me solve this. Raffy is 3/4 as old as Orly. 4 years ago, raffy was one year more than 1/2 as old as orly. how old is each?
The sum of a 2 digit number is 7. If the digits are reversed, the number is decreased by 27.
yeah but how do u solve the equation
Find the sum of first 10term of which t3=t12, t15 =106, can u give me answer for this Sir
2 times x will give you 2x and 24-1
3x+12 = 2x + 23
then transpose
Hi sir
Please help for a lecture involving more than 2, 3 etc people in age word because most and most teachers bring only two people.
now: mary=3x her son= x
in twelve years: mary= 3x + 12 her son = x + 12
so the equation we want has to be equal so:
(mary) 3x + 12 = 2(x+12) - 1 (her son)
= 3x + 12 = 2x + 24 - 1
= 3x + 13 = 2x + 24
= x + 13 = 24
= x = 11
hope this helped :D
where did he get the 1
niceeeeeeeeeeeeeeeeeeee this helped me !