| 26. | A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in : |
| a. | 4 days |
| b. | 6 days |
| c. | 8 days |
| d. | 12 days |
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Answer: (c).8 days
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| 27. | A can finish a work in 24 days, B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days. The remaining work was done by A in: |
| a. | 5 days |
| b. | 6 days |
| c. | 10 days |
| d. | 10(1/2) days |
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Answer: (c).10 days
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| 28. | X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work? |
| a. | 13(1/3)days |
| b. | 15 days |
| c. | 20 days |
| d. | 26 days |
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Answer: (a).13(1/3)days
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| 29. | A and B can do a job together in 7 days. A is 1(3/4) times as efficient as B. The same job can be done by A alone in : |
| a. | 9(1/3) days |
| b. | 11 days |
| c. | 12(1/4) days |
| d. | 16(1/3) days |
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Answer: (b).11 days
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| 30. | A and B together can do a piece of work in 30 days. A having worked for 16 days, B finishes the remaining work alone in 44 days. In how many days shall B finish the whole work alone? |
| a. | 30 days |
| b. | 40 days |
| c. | 60 days |
| d. | 70 days |
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Answer: (c).60 days
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