Question

15 mens can do a pice of work in 36 hours how many will be reurired to finish the work is 20 hours​

Answer 1

Hello! Here's your answer:

15 men ↪36 hours = 1 work

1 man ↪1 hour = 1/(36*15) work

1 man ↪ 20 hours =20/(36*15) work

1 man =1/27 work

x men = 1 work

X/27 = 1

X = 27 men.