Aoa,

Kindly solve this question. In this question, two different people are doing the same work, and this is confusing me in its solution

If 3 men or 6 boys can do a work in 20 days, then 6 men and 8 boys shall take:

A. 6 days.
B. 8 days.
C. 9 days.
D. 20 days.

P.S: Quick and detailed reply would be highly appreciated. Thanks in anticipation.

Regards.