A and B can complete a piece of work in 30 days. B and C in 10 days, which C and A in 5 days. If all of them work together, the time taken in completing the work

If 36 persons can finish 50% of work in 12 days In how many days 72 person can finish the complete work?

A can do $\frac{1}{4}$th part of work in 12 days, B can do 50% work in 20 days , and C can do $\frac{1}{3}$rd of the same work in 15 days. Who complete the work first?

A and B working together can do a work in 10 days. If A can do the work in 15 days, then how many days will B take to do the same work?

A completes a work in 7 days. B completes the same work in 9 days. What will be the time taken in completing the same work if both A & B work together?

P alone can do a piece of work in 5 days and Q alone in 4 days. P and Q undertook to do it for Rs. 3000. With the help of R they completed the work in 2 days. How much is to be paid to R?

To complete a work, Aditi takes 60 % more time than Bimla. If both of them work together, they take 16 days to complete the work. How much time shall Bimla take to do it alone?