Question

# If 16 men can build a wall of 52m long in 25 days working for 8 hours a day, in how many days can 64 men build a similar wall of 260m long working for 10 hours a day?

A
35
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B
65
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C
40
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D
25
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Solution

## The correct option is A 25 Solve:- on considering first situation no. of men (m1)=16 no. of days(D1)=25 no. of hours work daily =8 hours - length of wall =52 mand in second case by using similarnotation we get,M2=64D2=? no. of hour =10 hourslength of wall =260 mWe know that, no. of men α workno. of hours α work no. of days α work So, M1×D1×H1l1=M2×D2×H2l2⇒16×25×852=64×D2×10260⇒D2=25 DaysH1,H2 Denotes hours in first and secondcase. Similarly l1 and l2 represent length

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