Two motor mechanics, Taju and Siraj, working together can overhaul a scooter in 6 hours. Raju alone can do the job in 15 hours. In how manu hours can siraj alone do it?

W and T together can do a work in 140 days. W alone can do the work in 160 days. In how many days can T alone do the work?

A ,\ B\ a n d\ C working together can do a piece of work in 8 hours. A alone can do it in 20 hours and B alone can do it in 24 hours. In how many hours will C alone do the same work?

A ,\ B\ a n d\ C working together can do a piece of work in 8 hours. A alone can do it in 20 hours and B alone can do it in 24 hours. In how many hours will C alone do the same work?

Aman and Raman together can do a work in 10 days. Aman alone can do the work in 12 days. In how many days Raman alone can do the work?

If 36 men can do a piece of working 25 hours in how many hours will 15 men do it?