How Many Men can do the Same Work?

42 men can do a piece of work in 18 days. How many men would be engaged to do the same work in 21 days?

  1. 36
  2. 24
  3. 30
  4. 44
Monis Rasool Professor Asked on 23rd May 2015 in Maths.
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1 Answer(s)

Answer: (1) 36
Explanation:-

Formula-
M1D1 = M2D2
where, M = number of men
D = number of day
According to question,  42 x 18 = M2 x 21
M2 = 42 x 18 /21 = 2 x 18
= 36 men

Hence, 36 men would be engaged to do the same work in 21 days.

Anurag Mishra Professor Answered on 28th May 2015.
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