Question

10 men can dig a well in 9 days in how many days can 15 men and if the same well

Answer 1

right answer is 6 day

Answer 2

Hey mate,

Let's suppose the total work done by these men is one.

So if 10 men take = 9 days


then 10 men did = 1/9 work/ day

Assuming efficiency for each man equal.

Therefore one man does = 1/90 work/day.

So 15 men can do = 15/90 work/day.

Let no of days taken by 15 men is x.

So,

15/90 × x= 1

Therefore x = 6

hope this helps you out!