A contractor undertook to do a piece of work in 15 days. He employed certain number of laboures but 5 of them were absent from the very first day and the rest could finish the work in only 20 days. Find the number of men originally employed ?  Choose the correct choice from the following answers:
A) 25 B) 20 C) 19 D) 23 E) 18
Let the number of men originally employed be x.   15x = 20(x â€“ 5)   or x = 20   Answer 20
<result>B</result>
A contractor undertook to do a piece of work in 15 days. He employed certain number of laboures but 5 of them were absent from the very first day and the rest could finish the work in only 20 days. Find the number of men originally employed ?