Question

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

Answer 1

15

Explanation:

30 men = 20 days

40 men= ?

1man =30×20= 600

=600÷40= 15

40 men = 15 days

i' m not really sure if it is wrong sorry