Time and work Questions and answers

  1. Aptitude
    1. Compound interest
    2. Boat and Stream
    3. Trains
    4. Percentage
    5. Discount
    6. Mixture and Allegation
    7. Unitary Method
    8. Work and Wages
    9. Pipes and Cisterns
    10. Linear Equations
    11. Approximation
    12. Word problems
    13. Number System
    14. Time and Distance
    15. Average
    16. Ratio and Proportions
    17. Profit and Loss
    18. Partnership
    19. Permutation and combination
    20. Probability
    21. Problem on ages
    22. Time and work
    23. Simple and compound interest
    24. Mensuration
    25. Number series
51). A can build up a structure in 8 days and B can break it in 3 days. A has worked for 4 days and then B joined to work with A for another 2 days only. In how many days will A alone build up the remaining part of the structure ?
A). 10 days
B). 9 days
C). 12 days
D). \( \Large 7\frac{1}{3} \)days
52). 6 men can do a piece of work in 12 days while 8 women can do the same work in 18 days. The same work can be done by 18 children in 10 days. 4 men, 12 women and 20 children work together for 2 days. If only men have to complete remaining work in 1 day, then find the required number of men.
A). 36
B). 24
C). 18
D). Couldn't be determined
53). A can complete a work in 20 days and B in 30 days. A worked alone for 4 days and then B completed the remaining work along with C in 18 days. In how many days can C working alone complete the work ?
A). 12
B). 68
C). 72
D). 90
54). A and B each working alone can do a work in 15 days and 25 days, respectively. They started the work together but B left after some time and A finished the remaining work in 7 days. After how many days from the start did B leave ?
A). 3
B). 5
C). 7
D). 9
55). Consider the following diagrams x men, working at constant speed, do a certain job in y days. Which one of these diagrams shows the relation between x and y?

A). Diagram I
B). Diagram II
C). Diagram III
D). Diagram IV


56). A, B and C can do a piece of work individually in 8, 12 and 15 days, respectively. A and B start working but A quits after working for 2 days. After this, C joins B till the completion of work. In how many days will the work be completed?
A). \( \Large 5\frac{8}{9} \)days
B). \( \Large 4\frac{6}{7} \)days
C). \( \Large 6\frac{7}{13} \)days
D). \( \Large 3\frac{3}{4} \)days
57). Rambabu can do a piece of work in 5 days and Santosh can do the same work in 7 days. If both work together, they will finish the work in how many days?
A). 12 days
B). 2 days
C). \( \Large 2\frac{11}{12} \) days
D). \( \Large \frac{12}{35} \) day
58). Rajan can do a piece of work in 10 days, Rakesh can do in 12 days and Mukesh do the same work in 15 days. In how many days they can finish the work, working together ?
A). 3 days
B). 5 days
C). 4days
D). 2 days
59). Sohan and Rohan can do a piece of work in 10 days, Rohan and Mohan can do in 12 days, Sohan and Mohan in 15 days. The time taken by them to do this work together is .
A). 16 days
B). 15 days
C). 12 days
D). 8 days
60). Sunil and Santosh together can finish a work in 30 days. They worked for it for 20 days and then Santosh left. The remaining work was done by Sunil alone in 20 more days, Santosh alone can finish the work in
A). 52 days
B). 30 days
C). 48 days
D). 60 days
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