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20 men complete one-third of a work in 20 days. How many more men should be employed to finish the rest of work in 25 more days?


A) 15

B) 12

C) 18

D) 25

Correct Answer:
B) 12

Description for Correct answer:

Given, M1 = 20

M2 = 20 + x

W1 = 1/3

W2 = 1 - 1/3 =2/3

D1 =20 and D2 = 25

According to the formula, M1D1W2 = M2D2W1

20 x20 x (2/3) =(20 + x) x 25 x (1/3)

20 x 20 x (2/3)= (20 + x) x 25/3

= > 16 x 2 = 20 + x

x = 32 - 20 = 12


Part of solved Time and work questions and answers : >> Aptitude >> Time and work




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