A group of men decided to do a work in 50days, but 10 of them became absent. If the rest of the group did the work in 60days, Find the original number of men?
Pick one:
A) 60
B) 50
C) 40
D) 100
E) 25

Rationale: "original number of men = 10 * 60 / ( 60 - 50 ) = 60 answer is a"
Answer: A