Question

20 men can build a wall in 9 days then how long would it take 12 men to build the same wall​

Answer 1

I think that 12 man can make the same wall in 11 days

Answer 2

Step-by-step explanation:

Days taken by 20 men to build a wall = 9

.: Days taken by 12 men=12 X a

20 X 9= 12a

180=12a

180/12=a

.:a=15