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 : | |||||||||||||||
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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: | |||||||||||||||||||
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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? | |||||||
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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: | |||||||||||
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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? | |||||||
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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: | |||||||
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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? | |||||||
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