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Time & Work : Part 2 (in Hindi)
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Part 2

Abhishek Pandey is teaching live on Unacademy Plus

Abhishek Pandey
Top Educator in Defence Category. Movies, Music, Books.

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Shashi Kumar
a year ago
Scroll down on course index and you will got BPSC AE Building Construction & Materials
your teaching is very good sir
sir in question no.5 why we are not multiplying the work of b+c with 4 like 4(4+3) instead of that we are multiplying it with 2 when it is given in question that after 2 more day b lefts the work
Q1 A and B can do a piece of work in 3 days. B and C in 9 days and A and C in 12 days. Find the time in which A, B and C can finish the work, working together? sol 3 15/19 2Q A can do a piece of work in 10 days and B can do same work in 15 days. they started working together but after 2 days , A left work. The remaining work was completed by B alone, then time taken to complete the work? sol 8 2/3. I can't find the same answer sir
Abhishek Pandey
a year ago
you solve and send me the solution and I'll make corrections.
Sanu Kumar
a year ago
Q1 A+B=3 B+C=9 A+C=12 LCM( total work)= 36 one day work A+B 12, B+C=4,A+C=3 A+B+B+C+C+D=19 2(A+B+C)=19 A+B+C=9 1/2 I don't knw correct or not Q2 A:10 B:15 LCM= 20 then one day work A=3, B=2 work together for 2 days =5×2=10 remaining work completed by B = 2×D = 20 D= 10 days total time 12 days
Sanu Kumar
a year ago
Q2 LCM =30
Abhishek Pandey
a year ago
first wrong : 2(A+B+C) = 19 A+B+C = 19/2 TOTAL WORK = 36 TIME = 36/19/2 72/19 DAYS second is correct
Sanu Kumar
a year ago
but sir second question ka answer CDS pathfinder mai 8 2/3 hai.
Priti Saklani
a year ago
sanukumar ... Jo 19/2 hai Apne wo work/day nikala hai... to find out time you have to divide it further by 36 ( which was LCM of 3,9,12) ..answer is correct in your book
Priti Saklani
a year ago
sanukumar ... Jo 19/2 hai Apne wo work/day nikala hai... to find out time you have to divide it further by 36 ( which was LCM of 3,9,12) ..answer is correct in your book
Priti Saklani
a year ago
second question is done correctly by you.. no worries kbi kbi misprint b ho jata hai
Sanu Kumar
a year ago
thanks.
Sir 5th question ka ans.12 nhi aayega
Suman Kalkal
9 months ago
sorry sir 20/ 3 aayega na 34/3 ki jgh
  1. Complete Mathematics Course for AFCAT Exam By Abhishek Pandey


  2. 3 A: 9 Da I S So 4 2 Sol. l o: 15: 20: 3-2 rime- Time - 1 3


  3. A: 12 Das A:20Days 8: 30 Day.s C: 2D Days A lejt the vork and A4 2 DgAS Aledd ,he.oork 2 more days 2 lef the Sok'':- 12: A Sof R 4 9 2o4 30 : R De 8 Days 3 - 3 34 AN