(1) Ir3 persons can do a piece of work in 4 days, then 4 persons can d

1.	(1) Ir3 persons can do a piece of work in 4 days, then 4 persons can do t in.... days.
Answer» Let S be the speed at which each worker builds the wall Let N be the number of days required by 4 workers to build the wall We assume S to be the same for all workers S = 1 work divided by 3 workers then divided by 4 days = 1/12 S = 1 wall divided by 4 workers then divided by N days = 1/4N 1/12 = 1/4N 4N = 12 N = 12/4 = 3 Like my answer if you find it useful!

(1) Ir3 persons can do a piece of work in 4 days, then 4 persons can do t in.... days.

Answer»

Let S be the speed at which each worker builds the wall

Let N be the number of days required by 4 workers to build the wall

We assume S to be the same for all workers

S = 1 work divided by 3 workers then divided by 4 days = 1/12

S = 1 wall divided by 4 workers then divided by N days = 1/4N

1/12 = 1/4N

4N = 12

N = 12/4 = 3

Like my answer if you find it useful!