For the first question, Turn 30 percent into a decimal. This will be 0.3. Now, Multiply 0.3 by 1060, which gives us 318. Finally, subtract 1060-318=742.
Well. he already give to us the 10%he increased in this year. So now we need to find what is his first height ? And we go to this formal (percentage of increase =new amount(new height) _original amount (original height)over original height
at 3:41 Sal suddenly made the wizards or W a 1? How does that make sense when it shouldnt have a number as we dont know what number it is u cant just make any letter a number, also at 4:19 he made the W AGAIN a 1, how does this make any sense!? Can someone PLEASE help me?
He splits up 100 and 100 to make them 100% each and then adds 20% to one side which is odd because it technically equals 120% for the goblins if kept apart. While yes, technically speaking it is 20% more than the other side, the way he wrote the question you would think 220 is 100% and split it 60/40 which is 20 percent more for one side (132/88). I believe this is the more accurate method to calculate the problem and the way most people would do it if asked because you would be calculating the total sum to 100%, not 120%. The ratio if done his way becomes 55% and 45% because he added %20 more of something to the total, diluting the initial value he started with, making the difference now only 10% and not 20%
In the second problem I set it up as a 40% Wizards / 60% Goblins ratio (because the difference between 40% and 60% would be 20% and 40%+60%=100%) However when solving for 60% from 220 (100% )I got a different answer???
His methods a stupid I got a new method from an indian tutor - for example for the 1st question. Divide the 30% by 100 which = 0.3. Subtract 1 - 0.3 = 0.7 Multiply the 0.7 * 1060 = 742
*His methods a stupid* I got a new method from an indian tutor - for example for the 1st question. Divide the 30% by 100 which = 0.3. Subtract 1 - 0.3 = 0.7 Multiply the 0.7 * 1060 = *742*
I've been going through the whole course and this is the only part I've been having trouble with. The quiz wording is intentionally confusing and don't match the methods in the video lesson and I'm not the only one who's having a hard time with it. I'm 45% done with pre-algebra it a week and a half and this 500 point portion has taken me 3 days and I'm only on the second quiz. This shits a nightmare...
Perfect, especially the last example. Make sense and most common in real life. Cheers
Khan , normally I get your lectures but this one is too difficult to get😞
To be honest😞
I knew it wasn't only me.........this is way to complicated
Ikr
@@noyasmeatbuns8905 exactly
Im so confused because I'm also using variables within the word problems of percentages! 😫
You know what, this was my first video of Khan Academy and it made a bad impression, answering questions difficultly
Not to mention the quiz questions seem like they don't match the examples in the videos
my man sounding like a dollar store chills
For the first question, Turn 30 percent into a decimal. This will be 0.3. Now, Multiply 0.3 by 1060, which gives us 318. Finally, subtract 1060-318=742.
Dude didn't they do the first question simple he made it hard
Just complicated but as I listened and seen it being worked I can see, but not ready for this yet.
please provide a simpler method for quest 2 if you can
i love his voice
This is a good advantage for learners like me but why's someone disliking videos
this is some good help for us
BECAUSE SONE THINKS ITS COMPLICATED
at 3:45 when you were figuring out the answer on how meany goblins there are, where did you get the 1.2 from?
Ikr, can you help me if you've figured it out? Iv been confused on this question for a week now :/
1W + 0.2W = 1.2W
So why we are doing that plz any logic to it if something is more @@anushagoil7377
that through me off too 😩
My answer on the last problem is 148.5 because 10% of 165 is 16.5cm so I subtracted the 10% to his height
KIT Bro, you are very correct on that part.
Julian Cole Arroyo ya they made a big mistake bro
Well. he already give to us the 10%he increased in this year. So now we need to find what is his first height ? And we go to this formal (percentage of increase =new amount(new height) _original amount (original height)over original height
The actual answer is 148.5
You’re all wrong lol
me: i understand
my brain: mybraingon
Isn’t the last question 148.5 I’m so confused
i got that too bruh
at 3:41 Sal suddenly made the wizards or W a 1? How does that make sense when it shouldnt have a number as we dont know what number it is u cant just make any letter a number, also at 4:19 he made the W AGAIN a 1, how does this make any sense!? Can someone PLEASE help me?
thx a lot I have a bloody nose and I had a very rough time doing this subject.
He splits up 100 and 100 to make them 100% each and then adds 20% to one side which is odd because it technically equals 120% for the goblins if kept apart. While yes, technically speaking it is 20% more than the other side, the way he wrote the question you would think 220 is 100% and split it 60/40 which is 20 percent more for one side (132/88). I believe this is the more accurate method to calculate the problem and the way most people would do it if asked because you would be calculating the total sum to 100%, not 120%.
The ratio if done his way becomes 55% and 45% because he added %20 more of something to the total, diluting the initial value he started with, making the difference now only 10% and not 20%
Thx
SHEEEEEEEESH
🙄🙄🙄🙄🙄🙄
I got the same result.
there needs to be an easier way to do this.
thank you Khan
100%=220
20%=?
20*220/100=44
20%=44.(Extra Goblins)
50% of 220= 110.
50%+20%=70%.
110+44= 154 goblins.
(154/220*100=70%)
😎
🤗 yay
@@mikethegamedev u ain’t a dev boi
where did you get the 50% from
In the second problem I set it up as a 40% Wizards / 60% Goblins ratio (because the difference between 40% and 60% would be 20% and 40%+60%=100%) However when solving for 60% from 220 (100% )I got a different answer???
I did the same....
In the second way of writing it, I thought you had to use X over the 1060 and then cross multiply??
Okay😇☺
Where did u get the 1.2
W + .2W = 1.2W
@@MuffinStationery but like how do you know w=1.2 he just added the one for what
@@meriemghandir8285 because it was w+0.2w. pretend it’s 1w + 0.2w. that equals 1.2w
ikr
get 1.2 by adding 100% and 20%. in decimal form, 120% is 1.2.
hope it helps!
I cant get this, Me just rewinding every second
The answer for the second problem is 148.5
Hope your my teacher T-T
Thanks.
complicated
on the first problem, I didn't get 742. I did 1060-0.3(1060)=11232882.. and how u even get 70%? plz help I have a test coming soon! :(
What is this increase or decrease
what grade is this?
87th
☺️ 😊 thx
How did you understand this it’s so hard
I do not why people wasting a time
why?
@@jakesucgang4497 it's difficult to understand.it's not easy to learn
@@irshanaseer4176 what's your point?
im using khan academy as a math curriculum and hoping i will be good at mathematics
the middle question is not correct sir.
132 goblins is the answer
Actually, I found another solution: If 30% of 1060 is 318, then 1060-318=742
Thats what he did
First question was too easy khan
132 Goblins and 88 Wizards. 44 of the Goblins is the 20% extra.
The same answer
the last one
not anymore.
hey peeta
the horse is here
I.d.k bro
7:04 just use a calculator
Goblins & wizards in the magic club? I can’t take it. Buzz killing narratives.
questions 2 explinations made no sense to me
Ikr, can you help me if you've figured it out? Iv been confused on this question for a week now :/ Cuz I mean where did he get the 1 from the W??
I have a different answer. :-(
jajajajajajajajaj xddd :v
@TheDicebear
148.5 is wrong 148.5 * .1 = 163.35 165 / 1.1 = 150 150 x 1.1 = 165 = 150 (1+10%) = 165, sal did it right
idk man :/
When Joe from Family Guy becomes a math instructor.
🤔🫤😵
to hard
i didnt understand a thing bruh.
His methods a stupid I got a new method from an indian tutor - for example for the 1st question.
Divide the 30% by 100 which = 0.3.
Subtract 1 - 0.3 = 0.7
Multiply the 0.7 * 1060
= 742
@@ibraklay9343 that's exactly what he did. but instead he subtract 100% and 30% to get 70% which is also 0.7
Is it physically possible to explain any better then you
Yes
*His methods a stupid* I got a new method from an indian tutor - for example for the 1st question.
Divide the 30% by 100 which = 0.3.
Subtract 1 - 0.3 = 0.7
Multiply the 0.7 * 1060
= *742*
Thats basically what his 2nd method is u idiot
do you have a simpler method for quest 2 please
@@charityailemen9360 what's quest 2
@@ibraklay9343 The oculus?
@@ibraklay9343 question 2
This dont make sense bruh Might as well learn on my own than listen to dis crap
stop the additude.
I've been going through the whole course and this is the only part I've been having trouble with. The quiz wording is intentionally confusing and don't match the methods in the video lesson and I'm not the only one who's having a hard time with it. I'm 45% done with pre-algebra it a week and a half and this 500 point portion has taken me 3 days and I'm only on the second quiz. This shits a nightmare...