26.

A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in :

 A. 4 days B. 6 दिन C. 8 दिन D. बारह दिन

27.

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 दिन

C.

10 दिन

D.
 10 1 दिन 2

28.

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.

 13 1 days 3

B.

15 दिन

C.

20 दिन

D.

26 दिन

29.

A and B together can do a piece of work in 30 days. A having worked for 16 days, B finishes the remaining work alone in 44 days. In how many days shall B finish the whole work alone?

 A. 30 days B. 40 दिन C. 60 दिन D. 70 दिन

30.

A and B can do a job together in 7 days. A is 1 times as efficient as B. The same job can be done by A alone in :

A.

 9 1 days 3

B.

11 दिन

C.
 12 1 दिन 4
D.
 16 1 दिन 3