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Q.

A certain number of persons can complete a work in 34 days working 9 h a day. If the number of persons is decreased by 40 %, then how many hours a day should the remaining persons work to complete the work in 51 days?

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An Intiative by Sri Chaitanya

a

8

b

12

c

10

d

19

answer is D.

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Detailed Solution

We know the standard formula

M1×D1×H1=M2D2H2x×34×9=60100×51×H2

H2=x×34×9×10060×51

H2=10 Hrs

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