Q : Sudhir and Shyam can do a work in 12 days, while Shyam alone can complete it in 30 days. In how many days can Sudhir complete that work alone?
(A) 20 days
(B) 18 days
(C) 28 days
(D) 30 days
A, B, and C alone can do a work in 40 days ,120 days and 36 days respectively. A and B work together for 20 days and leave it incomplete. C carries on the work and complete it alone. How many days did C take to complete the work?
(A) 18
(B) 12
(C) 20
(D) 16
8 men working for 9 hours a day complete a piece of work in 20 days. In how many days can 7 men working for 10 hours a day complete the same piece of work?
(A) 21 days
(B)
(C)
(D)
A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in-
(A) 10 days
(B) 8 days
(C) 12 days
(D) 15 days
To do a certain work, the ratio of the efficiencies of X and Y is 5:4. Working together, they can complete the same work in 10 days. Y alone starts the work and leaves after 5 days. The remaining work will be completed by X alone in:
(A) 14 days
(B) 12 days
(C) 10 days
(D) 15 days
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