Q. A alone can do a work in 12 days while A and B together can do that work in 7.5 days. Find the time taken by C alone to do that work if C takes 3 days more than that of B alone to do that work?

Q. A can do a work in 24 days and B can do the same work in 18 days. If A starts work alone and after four days B joined him, then find in how many days total work will be completed?

Q. Six girls can complete a piece of work in 5days, whereas 10boys takes 4days to complete the same piece of work. In how many days will 3 girls and 6 boys together take to complete the piece of work?

Q. A can do 5/8 of a piece of work in 25 days; then he calls B and they finish the remaining work in 5 days. How long B alone will take to do whole work?

Q. 12 men can do a work in 10 days while 10 women can do the same work in 18 days. In how many days 4 men & 6 women together can do the same work?

Q. Ram alone can complete a work in 40 days. If Ram and Shayam together take 37.5% less time than Ram to complete the same work, then find in how many days Shayam alone can complete the work?

Q. A is 40% more efficient than C and B is 50% more efficient than A. If A and C together can complete a piece of work in 45 days, then find days taken by A, B & C together to complete 50% of the work?

Q. A alone can complete a work in 40 days. A and B together can complete one-fourth of the work in 3 days. If A started the work alone and, after 8 days, B joined, then find the number of days taken by A and B together to complete the remaining work.

Q. Asha and Aman working together can completes the work in Z days. If Asha and Aman alone takes (z+27) and (Z+12) days respectively to complete the work, then find the value of Z?

Q. C is 100% more efficient than B. A alone can complete a piece of work in 9 days and B & C together can complete the same work in 2 2/3 days. Find what portion of work will be completed, if A & B works together for 4 days.