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It is given that 16 men working 18 h a day can build a wall 36 m long, 4 m broad and 24 m high in 20 days. How many men will be required to build a wall 64 m long, 6 m broad and 18 m high working 12 h a day in 16 days ?
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- 60
- 20
- 30
- 35
Correct Option: A
Given, M1 = 16, T1 = 18,
W1 = 36 x 4 x 24, D1 = 20 and M2 = ?
T2 = 12, W2 = 64 x 6 x 18, D2 = 16
According to the formula,
M1D1T1/ W1 = M2D2T2/ W2
⇒ 16 x 20 x (18/36) x 4 x 24 = M2 x 12 x (16/64) x 6 x 18
⇒ (15/36) x 24 = M2 x (2/64) x 6 x 18
∴ M2 = 60 men
