How Much Does C Get? If

A and B are assigned a work for Rs.37.50. A can do it in 20 days, while B in 30 days, If they complete the work in 8 days with the help of C, then how much does C get?

  1. Rs.12.5
  2. Rs.13
  3. Rs.14
  4. Rs.15
Monis Rasool Professor Asked on 25th May 2015 in Maths.
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  • 1 Answer(s)

    Answer: (a) 12.5
    Explanation:-
    A can do a work = 20 days
    A can do work in a day = 1/20

    B can do work = 30 days
    B can do work in a day = 1/30

    A and B together can do work in a day = 1/20 + 1/30
    = 5/60 = 1/12
    A, B and C together can do work = 8 days
    C can do it = 1/8 – 1/12 = 1/24

    The ratio A, B and C = 20: 30: 24 = 10: 15: 12

    C gets = 12 x 37.50/37 = Rs.12.16

    Anurag Mishra Professor Answered on 25th May 2015.
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