Question

A can do a work in 4 days. B can do the same work in 12 days. They together work and finish the work. How many days they together finish the work?​

Answer 1

Answer:

3

Step-by-step explanation:

A do in one day = 1/4 part

B do in one day = 1/12 part

A & B together do in one day = 1/4+ 1/12 = 4/12 = 1/3 part

hence together finish in 3 days