Question

3 men build a wall in 2 days.

How long will it take
a) 1 man
b) 2 men?

Please show working

Answer 1

The number of man-days required for the wall is 3 x 2 = 6
Assuming each man consistently produces the same amount of effort
then 1 man will take 6/1 = 6 days
and 2 men will take 6/2 = 3 days

Answer 2

Explanation:

Big clever stuff 100 men in 1 second tick tick boom