Question

If 10 person can do a job in 20 days,then in how many days 20 persons with twice the efficiency can do the same job.

Answer 1

Answer:5 days

Step-by-step explanation:

10 can do in 20 days

So,20 can do in 20/2(.i.e. 10 days)

Now since efficiency is double

The answer will be 10/2= 5

Answer 2

20 persons can do it in 60 days.