4 men can repair a road in 7 hours. How many men are required to repair the road in 2 hours ?
A) 17 men B) 14 men
C) 13 men D) 16 men
4 men can repair a road in 7 hours
Answer: B) 14 men
M x T / W = Constant
where, M= Men (no. of men)
T= Time taken
W= Work load
So, here we apply
M1 x T1/ W1 = M2 x T2 / W2
Given that, M1 = 4 men, T1 = 7 hours ; T2 = 2 hours, we have to find M2 =?
Note that here, W1 = W2 = 1 road, ie. equal work load.
Clearly, substituting in the above equation we get, M2 = 14 men.
Subject: Time and Work – Quantitative Aptitude – Arithmetic Ability
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