BPSC 63rd Prelims Exam 01 Jul 2018 Solved Paper

Question : 144 of 150

Marks: +1, -0

10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?

Validate

Solution:

We know that

{w}_{1} {d}_{1}= {w}_{2} {w}_{2}

10 {w} × 7=10 {c} × 14

W for women
C for children

w=2 c

......(1)

5 w+10 c=5 w+5 w=10 w

we know that from the question

10 {w}=7

days
Hence, 5 women and 10 children will complete the work in 7 days.

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