Question

25 men can do a piece of work in 50 days. In how many days will 10 men complete the work?​

Answer 1

Answer:

First try to convert this question into one variable. And since the question is asking about children let’s eliminate men.

25 Men Take 10 Days is as good as saying 250 Men will take 1 Day

20 Children Take 50 Days is as good as saying 1000 Children will take 1 Day

So we can safely conclude that efficiency of 250 Men is as good as that of 1000 Children

i.e 1 Man is as efficient as 4 Children

Now in the question, replace 5 Men with 20 Children.

So 20 Children have already worked for 10 Days.

And form the given question (since 20 Children will take 50 Days), we can conclude that the same gang of 20 Children will need another 40 Days to complete the remaining work.

So remaining work can be done by 20 Children in 40 Days.

Since this work is to be done in 20 Days instead, we need to double our strength of 20 Children. So bring in another 20 Children.

Answer 2

Step-by-step explanation:

25 men = 50days

1 men= 50/25days= 2days

•: 10men = 2×10 = 20days