BOATS & STREAMS | A to Z | Part - 3 | Mrs. Radhina

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Profile name : Radhina Chinnaiah
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[@preethipradeepz7622]

Workout Sum 1:
Given:
B = 20km/hr ; S = 8km/hr ;
Total time = 10hrs.
To find:
Distance = ?
One Step Shortcut:
U = B - S
U = 20 - 8
U = 12km/hr.
D = B + S
D = 20 + 8
D = 28km/hr.
Distance = {(U*D)/(U+D)} × Total Time
Distance = {(12×28)/(12+28)} × 10
Distance = {(12×28)/(40)} × 10
Distance = 12 × 7
Distance = 84km.
Verification:
Up Time = Distance/Up Speed
Up Time = 84/12
Up Time = 7hrs.
Down Time = Distance/Down Speed
Down Time = 84/28
Down Time = 3hrs.
Total Time = 7 + 3 = 10hrs.
Verified 😎
Workout Sum 2:
Given:
B = 20km/hr ; S = 8km/hr ;
Time Difference = 8hrs.
To find:
Distance = ?
One Step Shortcut:
U = B - S
U = 20 - 8
U = 12km/hr.
D = B + S
D = 20 + 8
D = 28km/hr.
Distance = {(U×D)/(U~D)} × Time Difference
Distance = {(12×28)/(28~12)} × 8
Distance = {(12×28)/(16)} × 8
Distance = 12 × 14
Distance = 168km.
Verification:
Up Time = Distance/Up Speed
Up Time = 168/12
Up Time = 14hrs.
Down Time = Distance/Down Speed
Down Time = 168/28
Down Time = 6hrs.
Time Difference = 14 - 6
Time Difference = 8hrs.
Verified 😎

[@Niko_Bellic198]

Must to be pinned.....

[@monishrajraj6714]

Missing to Board classes... that feel like real class

[@priyangaj6967]

workout sum answers
1. 84km 2. 168 km

[@sakthiyarasisakthiyarasi5837]

Type 5 workout sum ans is 84
Type 6 workout sum is 168

[@muthuprabakaran5961]

Workout 1
Distance = 28 × 12 × 10
----------------------- = 84km
40
Workout 2
Distance = 28 × 12 × 8
.................... = 168km
16

[@DREAM_OF_VISION-111]

workout:1
B =20 kmph; TOTAL TIME=10hr
S=8 kmph;
Us= B-S= 20-8= 12;
Ds= B-S= 20+8= 28;
TO FIND: DISTANCE
(Us×Ds )
D=(TOTAL TIME)×----------------
( Us+Ds)
(12×28)
D=(10) ×-------------
(12+28)
10×12×28
D=----------------- => D=84 KM.
40
workout:2
B =20 kmph; Time difference (td) =8 hr;
S=8 kmph;
Us= B-S= 20-8= 12;
Ds= B-S= 20+8= 28;
TO FIND: DISTANCE
(Us×Ds )
D=(Td)×------------------------- -------
( Us-Ds)
(12×28)
D=(8) ×-------------
(28-12)
8×12×28
D= ----------------- => D=168 KM.
16

[@rahulsarath8680]

Mam kindly pls upload percentage income expenditure, population sums, lefted topics and ratio and proposition podunga mam 🙏🙏🙏

[@pavithrasai6103]

Thanks a lot mam for the session... Very very useful...

[@mam5143]

Mensuration tobic

[@SuperVijaypraveen]

Mam board la class edunga adhu dhan super

[@SureshMenon-hh5xg]

20

[@tirupathisrini7919]

Thank you radhina mam...valga valamudan

[@nandhakumar8847]

Thank you so much mam ✍

[@rajisri398]

Nalla teach panringa akka 😘❤️🔥 keep rocking akka 🔥

[@kadarkaraisubramanian4963]

Hello ms radhina mam.... How are you.. Mam.. For mains level exam plz upload many videos for sum of duff level Di and quants aptitude... Over all complete video discussion for po mains exam... Kindly upload ma'am.. It was very useful..

[@SureshMenon-hh5xg]

84

[@gunasekaran8890]

20km

[@futurebanker9375]

Mam daily 2 highlevel mains di podunga plsssssssss mam

[@SureshMenon-hh5xg]

168

[@jasminejeba6787]

Mam general English for comptative exam ku ethachum refer panuka mam..
Any best channel... Shortcut for spot error, etc..

[@ramya4766]

Refer Chandru maths RUclips channel for grammar purpose and daily ready the Hindu editorial it will improve yr English vocabulary skill

[@universeangel3361]

Crack with Jack Abith sir
Suresh IAS academy Abith sir
English Grammar in Tamil Abith sir

[@-GowthamG]

Mam intha method Mains ku use aguma

[@shing_chan]

💜💙💚💛🧡❤️ Tq 😊

[@asteroidgirl4364]

B - 20kmph
S - 8 kmph
Time difference - 8hours
Upstream - 12
Downstram - 28
12×24
----------- ×8 = 168 km
16
Distance - 168 km

[@thenmozhiselvaraj3589]

Provide board cls mam.

[@selvachandranb8994]

Mam old boat and stream video link anupunga mam

[@SamSam-ds1dk]

Banking ikku unacademy la video irruikka

[@billa5882]

Baby name ena sister

[@harishkumarul595]

epdi 84 vanthuchu

[@muthuarun5095]

tamil la questions kudunga mam

[@ramya4766]

Ungha Subscription courseku pay pannanumaa mam unacademyla evlo fees structure mam

[@RadhinaQuants]

Free classes r also there ma.. For plus subscription details, pls contact me in telegram

[@ramya4766]

@@RadhinaQuants saringha mam

[@ramya4766]

@@RadhinaQuants mam subscription coursela quants full topic cover panringhala

[@sarathsmart482]

Mam tamil question kanum

[@Dkv0072]

20% வீடியோ விளம்பரத்துக்கே போகுது😥