A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in:
Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?
A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?