Question

A and B can together do a task in 10 hours. if A can do the task in 15 hours, then B can do the same task in?​

Answer 1

Step-by-step explanation:

In 10 Hrs A can finish = 1 work

In 1 Hr A can finish = 1/10 work

In 15 Hrs B can finish = 1 work

In 1 Hr B can finish = 1/15 work

In 1Hr (A + B) can finish = 1/10 + 1/15 work = 1/6 work

In 6 Hrs (A + B) can complete 1 work

Therefore, A and B together can complete the work in 6Hrs