P, Q and R gets a total wage of Rs.3600 if they work together. P and Q gets a total wage of Rs. 2800 if they work together and P alone gets Rs.1600. Find the efficiency ratio of P, Q and R  

A, B and C alone can complete a piece of work in 24, 36 and 18 days respectively. A started working, after 2 days C joins with them and B joins with them after another 2 days, then find the no of days A, B and C worked together.

A, B and C gets a total wage of Rs.3600 if they work together. A and B gets a total wage of Rs. 2800 if they work together and A alone gets Rs.1600. Find the efficiency ratio of A, B and C  

P can complete a piece of work in thrice the time taken to complete Q and R together. If P and Q together can complete the work in 9 3/5 days and R alone complete in 16 days, then find the no of days taken to complete the work by P alone?

A can do a work in 20 days and B in 50 days. If they work on it together for 5 days, then what fraction of work is left?

A can do a work in 15 days and B in 9 days. If they work on it together for 5 days, then what fraction of work is left?

The rates of working of A and B are in the ratio of 2 : 3. The number of days taken by each of them to finish the work is in the ratio : 

X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 days, Y can alone finish that work in :