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Entry Test MCQ :: Time and Work Problems


31.  A can do a piece of work in 28 days. If B is 40% more efficient than A B can do the same piece of work in
A. 20 days B. 25 days
C. 27.5 days D. 30 days

32.  A is twice as good a workman as B and takes 6 less days to complete a piece of work as B does. To finish the work alone B will take
A. 12 B. 10
C. 13 D. 6

33.  A can complete a piece of work in 16 days and B can complete it in 20 days. They start working together. Two days before the completion of the work A leaves. Work is completed in
A. 10 days B. 8 days
C. 6.4 days D. 11 days

34.  A can do a piece of work in 10 days and B in 15 days. If they work for a day alternately A beginning the work will be completed in
A. 6 days B. 12 days
C. 8 days D. 15 days

35.  A and B can complete a task in 44 days when working together. After having worked together for 33 days B is called away. A completes the remaining task in the next 25 days. A can complete the job working alone in
A. 140 days B. 90 days
C. 100 days D. 84 days

36.  Three pipes A B and C can fill a tank in 20 hours. After working at it together for 5 hours C is closed and A and B fill it in 30 hrs. C alone can fill it in
A. 35 hrs B. 40 hrs
C. 30 hrs D. 28 hrs

37.  A tank has a leak which would empty it in 10 hrs. A tap is turned on and it admits 9 liters per minute into the tank and tank is now emptied in 25 hrs. How many liters tank holds?
A. 9000 B. 13400
C. 14500 D. 10000

38.  A tank can be filled by tap A in 16 hrs and by tap B in 20 hrs. Both the taps are kept opened for 8 hrs and then A is closed. In how many more hours will the tank be completely filled?
A. 2 hrs B. 12 2?3
C. 10 hrs D. 0.5 hrs

39.  Two pipes A and B can fill a tank in 14 and 21 hrs respectively. If both pipes are opened together then after how many hours A should be closed so that tank is full in 7 hours.
A. 28/5 hrs B. 6.5 hrs
C. 5 hrs D. 4 hrs

40.  20 men can do a certain work in 60 days but after every five days five additional men join them. In how many days will work be done now?
A. 30.5 days B. 31 days
C. 33.5 days D. 34.5 days




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