Q.16. can complete a work in 12 days working 8 hours a day.Q can complete the same work in 8 days working 10 hours a day. If both p and Q work together,working 8 hours a day,in how many days can they complete the work?
(A) 60/11
(B) 61/11
(C) 71/11
(D) 72/11
Q.17. works twice as fast as B. If B can complete a work in 18 days independently,the number of days in which A and B can together finish the work is:
(A) 4 days
(B) 6 days
(C) 8 days
(D) 10 days
Q.18. A and B complete a work in 6 days. A alone can do it in 10 days. If both together can do the work in how many days?
(A) 3.75 days
(B) 4 days
(C) 5 days
(D) 6 days
Q.19. A and B can do a piece of work in 12 days and 16 days respectively. Both work for 3 days and then A goes away. Find how long will B take to complete the remaining work?
(A) 15 days
(B) 12 days
(C) 10 days
(D) 9 days
Q.20. A can do a piece of work in 40 days; B can do the same in 30 days. A started alone but left the work after 10 days, then B worked at it for 10 days. C finished the remaining work in 10 days. C alone can do the whole work in?
(A) 24 days
(B) 30 days
(C) 44 days
(D) 17 days
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