Question

15 men can build a wall in 42 hours,how many workers will be required for the same work in 30 hours​

Answer 1

Answer:

No. of men that can built wall in 42 hrs = 15

No. of men that can built wall in 1 hrs = 15/42

No. of men that can built wall in 30 hrs = (15/42)×30

                                                                 = 10.71

                                                                 = 11 men(Answer)