Question

30 men working 7 hours per day completes a piece of work in 18days. To complete the same work in 21 men working 8 hours per day will take how many days​

Answer 1

answer = 45/ 2

Step-by-step explanation:

let the required days be x

30 x 7 x18 = 21 x 8 x (x)

x = 30 x 7/21 x 18/8= 180/8 =45/2 days