If 5 men can build a wall in 12 days how many can build it in 10 days ???
Its a simple unitary method problem…
5 men will do the work in 12 days
1 man will do in 5*12 = 60 days
So, 60/10=6 6 men can build it in 10 days
Fifteen men can build a wall in 60 days. How many more men are required to build another wall of same size in 45 days?