Some men can do a piece of work in 60 days. If

Some men can do a piece of work in 60 days. If 8 more men join them the work is finished 10 days before the stipulated time. How many men were there in the beginning?

[ A ] 35
[ B ] 40
[ C ] 48
[ D ] 52

Answer : Option B

Explanation :

Let the number of men be x.

X men do the work in 60 days.

1 man does the work in 60 X xdays.

So, (x+8) men do the work in 50days.

1 man does the work in 50(x+8) days

Now,60x = 50(x+8)

Or , 60x-50x = 400

Or, x=40.

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