Question

Thirty men take 20 days to complete a job working 9 hours a day. How many hours should 40 men work to complete that job in 20 days?

Answer 1

Answer:

27÷4 or 6.75 hrs

Step-by-step explanation:

M×D×H=m×d×h

30×20×9=40×20×y

y=27÷4 or 6.75 hours