Question

a certain number of men were complete a piece of work in 60 days.if there are 8 men more,the work could be finished in 10 days less.how many were originally are there

Answer 1

Originally 1et there be x men.
More men, Less days
(x + 8) : x ∷ 60:50
So, x + 8 / x = 60/50 or x = 40.