| 6. | 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 |
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Answer: (a).4 days
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| 7. | A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it? |
| a. | 8 hours |
| b. | 10 hours |
| c. | 12 hours |
| d. | 24 hours |
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Answer: (c).12 hours
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| 8. | 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 |
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Answer: (c).25 days
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| 9. | A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work? |
| a. | 23 days |
| b. | 37 days |
| c. | 37(1/2) days |
| d. | 40 days |
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Answer: (c).37(1/2) days
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| 10. | A machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M. while machine P is closed at 11 A.M. and the remaining two machines complete work. Approximately at what time will the work (to print one lakh books) be finished ? |
| a. | 11:30 A.M. |
| b. | 12 noon |
| c. | 12:30 P.M. |
| d. | 1:00 P.M. |
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Answer: (d).1:00 P.M.
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