A can do a piece of work in 4 days and B can do it in 12 days. In how many days will they finish the work, both working together...? Mcqs

A can do a piece of work in 4 days and B can do it in 12 days. In how many days will they finish the work, both working together...?

(A) 4 days

(B) 2 days

(C) 3 days

(D) 6 days