Question

If 3 persons can do a work in 4 days, then 4 persons can do it in -

3 days

5 days

2 days

6 days
​

Answer 1

Answer:

3 days........simple......

Answer 2

Answer:

Note: You can do this sum by unitary method also

Step-by-step explanation:

3 persons can do a work in 4 days

Let the no. of days needed to do the work by 4 persons be x

As it is a case of indirect variation

By condition,

4×x = 3×4

4x = 12

x = 12/4

x = 3

Hence 4 persons will take 3 days to complete the work.