Question

Some carpenters promised to do a job in 9 days but 5 of them were absent and remaining men did the job in 12 days. The original number of carpenters was: 

(a) 24 

(b) 20 

(c) 16 

(d) 18

Answer 1

Correct option (b) 20 

Explanation:

 Let there were N carpenters in the beginning 

According to question,