Ganesh, Harish Sruesh and Mahesh worked together to produce 558 pieces of an item in 12 hours. Ganesh is twice as efficient as Harish and is five sixth as effieient as Mahesh. Mahesh is thrice as efficient as Suresh. How many pieces can Mahesh produce in 9 hours?

Anand, Raju Suresh and Venkat together pro-duced 392 pieces of an item in 6 hours Suresh is four times as efficient as Anand and is one-third less efficeient than Venket. Raju s half as efficient as Vekent. How many pieces would Raju have produced, if he worked for 8 hours?

A can do a piece of work in x days.If new joins B who is twice as efficient as A,then in How many days can both finish double the work.

Suresh can finish a piece of work by himself in 42 days. Mahesh, who is 1/5 times more efficient as Suresh, requires X days to finish the work by working all by himself. Then what is the value of X ?

A is twice as efficient as B and together they finish a piece of work in 18 days. How many days will A take to complete the work alone?