Question

3 person can build a wall in 4 days then 4 person can be build it in​

Answer 1

Answer:

5 days

Step-by-step explanation:

as if 3-4 then 4-5 simple no logic

Answer 2

The answer is 3 days.

If 3 workers built the wall in 4 days it means each worker can build 1/12 wall per worker day

If X is the number of days for 4 workers

X*((1/12) wall/(worker*day))*4 worker = 1 wall

Worker and wall cancel out resulting in the following:

(X/(12 day))*4 = 1

X/(3 day) = 1

X = 3 days