Question

Three men can build a wall in 8 days. How long will it take them if they have the help of 2 boys? Assume that each boy works half as fast as each man.​

Answer 1

6 days

Explanation:

1 boy workload = 1/2 1 man workload

2 boys workload = 1/2*2 = 1 man workload

so 3 men + 2 boys workload = 4 men workload

3 men ..... 8 days ... 24man-days to build

4 men ..... x days ... 24man-days to build

x=24/4=6

Answer 2

Uhmm I think around 70 days or 90

I'm not sure