Aptitude:: Time and Work

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A and B can do a job together in 7 days. A is times as efficient as B. The same job can be done by A alone in :

A.

B. 11 days
C.

D.


X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work?

A.

B. 15 days
C. 20 days D. 26 days

A can finish a work in 24 days, B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days. The remaining work was done by A in:

A. 5 days B. 6 days
C. 10 days D.


A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in:

A.

B.

C.

D. 4 days

A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?

A. 5 B.

C. 6 D. 8

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