Question

A can do 1/6 of a piece of work in 2 hours and B can do 1/4 of the same work in 5 hours. In how many hours can both do it together?
plz someone give right answe it's urgent

Answer 1

Answer:

A can do 1/6 of a piece of work in 2 hours

In 1 hours A can do 1/12 of a piece of work

B can do 1/4 of a piece of work in 5 hours

In 1 hours B can do 1/20 of a piece of work

In 1 hour at a time A and B can do 1/12 + 1/20 = (5+3)/60 = 8/60 = 2/15 of the work

At a time A and B can complete the work in 15/2 hours

Step-by-step explanation: