Time and Work

Amit is twice as good a painter as Meenakshi and together they finish a piece of work in 6 days. In how many days will Meenakshi alone finish the work?

'A' is twice as good a workman as 'B', and together they complete a work in 15 days. In how many days can the work be completed by 'B' alone?

'A' takes 10 days less than the time taken by 'B' to finish a piece of work. If 'A' and 'B' together can finish the work in 12 days, find the time taken by B to finish the work.

Two men undertook to do a piece of work for Rs. 6000. One alone could do it in 15 days and the other can do it in 12 days, while with the assistance of a boy, work gets completed in 5 days. Find the share of boy?

9 women and 5 men can do a work in 9 days. 8 women and 9 men can do a same work in 6 days. How long will 5 women and 9 men can take to do the work?

Karthi is 40% more efficient than Rajesh, and Karthi can alone do a work in 20 days. If they working in alternative days starts with Karthi, then in how many days the work will get completed?

P can do a piece of work in 18 days. Q is 20 percent more efficient than P. Then in how many days three-fourth of the work is completed when both are working simultaneously?

Ganesh and Ragu can separately do a piece of work in 25 and 20 days respectively. They worked together for 8 days, after which Ragu was replaced by Rohit. If the work was finished in next 3 1/2 days, then the number of days in which Rohit alone could do the work will be?

7 men and 9 women can complete a piece of work in 10 days while 5 men and 5 women can complete the same work in 15 days. Then find 10 men and 8 women to complete the same work in?

P, Q and R can complete the whole work in 20 days. P starts the work and works for 'x' days while Q and R complete the remaining 2/5 of the work in 14 days then find the value of x?

20 men can complete a piece of work in 16 days. After 5 days from the start of the work, some men left. If the remaining work was completed by the remaining men 18(1/3) days, how many men left after 5 days from the start of the work?

6 men and 5 women can do a work in 10 days. 4 men and 7 women can do a same work in 12 days. How long will 6 women and 12 men can take to do the work?

A and B undertook to complete a piece of work for Rs. 4500. A can do it in 12 days, B can do it in 16 days and with the help of C, they complete the work in 5 1/3 days. Find the share of C?

A and B can do a piece of work in 10 and 15 days respectively. They began the work together but A leaves after some days and B completed the remaining work in 8 days. Number of days after which A left the job?

A, B and C all together can do a piece of work in 5 5/11 days. A takes 2 days less than the no of days taken by B and C together then find the no of days taken by A alone?