Question

1. If 30 men do part of a job in 2 days, how many days will 21 men take to do the job?​

Answer 1

Answer:

21 mens will take 20 days to do the job

30 men can do 1/7 part of a job in 2 days

30 men can do 7/7 = 1 job in 2 x 7 = 14 days

1 man can do 1 job in 14 x 30 = 420 days

21 men can do 1 job in 420/21 = 20 days

Hopr this helps☺