Question

If 25 men can do a work in 36 hours, find the number of men required to do the same work in 108

hours.
X×36 25×108
25×108/36
=25×3
=75 ​

Answer 1

this question is wrong because if we solve then

in 36 hour required men = 25

in 1 hour required men = 25 × 36

in 108 hours required men = (25 × 36 ) / 108 = 25 /3 men .

Answer 2

Given - 25 men can do work in 36 hours

Find - Number of men required to do the same work in 108 hours.

Solution - Assuming the number of men required to do the same work in 108 hours be x. Now relating number of men and hours through ratio and proportion.

Men : hours :: Men : hours

25:36 = x:108

Solving the mentioned ratio and proportion to find the value of x.

25/36 = x/108

x = 25*108/36

x = 75

Thus, 75 men are required to do the same work in 108 hours