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Quantitative Aptitude - Test-41


1. A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. B alone can do the whole work in :


2. If it takes 10 days to dig a trench 100 m long, 50 m broad and 10 m deep, what length of trench, 25 m broad and 15 m deep can be dug in 30 days ?


3. A is twice as good a workman as B and together they finish a piece of work in 14 days. The number of days taken by A alone to finish the work, is :


4. A and B can together finish a work in 30 days. They worked at it for 20 days and then B left. The remaining work was done by A alone in 20 more days. A alone can finish the work in :


5. A can do certain job in 25 days which B alone can do in 20 days. A started the work and was joined by B after 10 days. The number of days taken in completing the work was :



6. A and B can do a piece of work in 72 days ; B and C can do it in 7 days ; A and C can do it in 90 days. In what time can A alone do it ?


7. A contractor undertakes to do a piece of work in 40 days. He engages 100 men at the beginning and 100 more after 35 days and completes the work in stipulated time. If he had not engaged the additional men, how many days behind schedule would it be finished ?


8. A can do a certain job in 12 days. B is 60% more efficient than A. The number of days, it takes B to do the same piece of work, is :


9. A and B can do a piece of work in 18 days ; B and C can do it in 24 days ; A and C can do it in 36 days. In how many days can they do it all working together ?


10. If 3 men or 6 boys can do a piece of work in 10 days, working 7 hours a day; how many days will it take to complete a piece of work twice as large with 6 men and 2 boys working together for 8 hours a day ?


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