Q.11. If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be:
(A) 4 days
(B) 5 days
(C) 6 days
(D) 7 days
Q.12. A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in:
(A) 15 days
(B) 20 days
(C) 25 days
(D) 30 days
Q.13. A and B can do a piece of work in 40 days, B and C can do it in 120 days. If B alone can do it in 180 days, in how many days will A and C do it together?
(A) 45 days
(B) 22.5 days
(C) 3.25 days
(D) 18 days
(E) 12 days
Q.14. A, B, and C can do a piece of work in 8 days. B and C together do it in 24 days. B alone can do it in 40 days. In what time will it be done by C working alone?
(A) 25 days
(B) 24 days
(C) 60 days
(D) 20 days
(E) 30 days
Q.15. Daku and Tamatar can do a piece of work in 70 and 60 days respectively. They began the work together, but Daku leaves after some days and Tamatar finished the remaining work in 47 days. After how many days did Daku leave?
(A) 14 days
(B) 16 days
(C) 18 days
(D) 10 days
(E) 7 days
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