| 1. | A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is : |
| a. | 1/4 |
| b. | 1/10 |
| c. | 7/15 |
| d. | 8/15 |
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Answer: (d).8/15
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| 2. | A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in: |
| a. | 9(1/5)days |
| b. | 9(2/5)days |
| c. | 9(3/5)days |
| d. | 10 |
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Answer: (c).9(3/5)days
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| 3. | A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day? |
| a. | 12 days |
| b. | 15 days |
| c. | 16 days |
| d. | 18 days |
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Answer: (b).15 days
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| 4. | A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in: |
| a. | 20 days |
| b. | 22(1/2)days |
| c. | 25 days |
| d. | 30 days |
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Answer: (b).22(1/2)days
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| 5. | A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C? |
| a. | Rs. 375 |
| b. | Rs. 400 |
| c. | Rs. 600 |
| d. | Rs. 800 |
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Answer: (b).Rs. 400
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