If A works alone, he would take 4 days more to complete the job than if both A and B worked together. If B worked alone, he would take 16 days more to complete the job than if A and B work together. How many days would they take to complete the work if both of them worked together?

2.

A and B can do a piece of work in 18 days, B and C in 24 days, A and C in 36 days. In what time can they do it all working together?

3.

A and B together can complete a piece of work in 18 days, B and C in 24 days and A and C in 36 days. In how many days, will all of them together complete the work?

4.

A and B together can do a piece ofwork in 12 days while B alone can finish it in 30 days. A alone can finish the work in

5.

A can comprete 2/3 of a work in 4 days and B can complete 3/5 of the work in 6 days. In how many days can both A and B together complete the work?

6.

One man and one woman together can complete a piece of work in 8 days. A man alone can complete the work in 10 days. In how many days can one woman alone complete the work?

7.

8.

A work can be completed by P and Q in 12 days, Q and R in 15 days, R and P in 20 days. In how many days P alone can finish the work?

9.

A and B can do a work in 18 days, B and C in 24 days and A and C in 36 days, can do the work alone is

10.

A and B can do a work in 72 days. B and C can do it in 120 days. A and C can do it in 90 days. In what time can A alone do it?