| 1. | Husband can finish a piece of work in 8 days while his wife can finish the same piece of work in 16 days. Find in how many days both of them can finish the work, while working together. |
| a. | | 5 days |
| b. | | 5.3 days |
| c. | | 5.5 days |
| d. | | 6 days
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| 2. | A and B can complete stitching in 6 hours, B and C can do the same in 8 hours, while C and A can complete it in 12 hours. How long would each of them take, doing the same work, separately ? |
| a. | | A = 48 hours, B = 9.6 hours, C = 16 hours |
| b. | | A = 9.6 hours, B = 48 hours, C = 16 hours |
| c. | | A = 16 hours, B = 9.6 hours, C = 48 hours |
| d. | | A = 16 hours, B = 48 hours, C = 9.6 hours
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| 3. | X, Y and Z can finish painting a wall in 8, 10 and 12 hours, respectively. How many hours will all of them take to complete painting, working together? |
| a. | | 130/29 hours |
| b. | | 102/35 hours |
| c. | | 120/37 hours |
| d. | | 103/28 hours
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| 4. | 10 men and 15 women can do a piece of work in 30 days, Calculate in how many days can the work be done by 12 men and 27 women working together? |
| a. | | 8 days |
| b. | | 18 days |
| c. | | 15 days |
| d. | | 10 days
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| 5. | 15 men or 18 women can complete a piece of work in 12 days. Calculate the number of days 5 men and 10 women would take to complete the work ? |
| a. | | 11 days |
| b. | | 20/3 days |
| c. | | 10 days |
| d. | | 27/2 days
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| 6. | A and B can complete a piece of work in 18 days, while A alone can complete it in 24 days. Find the time taken by B alone to complete the work. |
| a. | | 63 days |
| b. | | 54 days |
| c. | | 36 days |
| d. | | 72 days
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| 7. | A family of 8 consume grains worth of $200 for 80 days. For how long will $300 maintain a family of 12 members? |
| a. | | 70 days |
| b. | | 80 days |
| c. | | 90 days |
| d. | | 75 days
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| 8. | 300 workers working 12 hours a day complete 1/4th of the job in 14 days. Find the number of additional workers required to complete the remaining work in 20 days by working 8 hours a day. |
| a. | | 945 |
| b. | | 725 |
| c. | | 645 |
| d. | | 825
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| 9. | If 80 men working 8 hours a day can complete a job in 20 days. Calculate in how many more days will 40 men working 10 hours a day do thrice the same work. |
| a. | | 50 days |
| b. | | 82 days |
| c. | | 85 days |
| d. | | 76 days
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| 10. | K is twice as good in cutting trees as L and hence he finishes a piece of work in 20 days less than L. Find the time taken to complete the work, when both K and L work together. |
| a. | | 40/3 days |
| b. | | 41/3 days |
| c. | | 42/5 days |
| d. | | 43/5 days
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| 11. | X can do a piece of work in 20 days. Y can do the same work in 30 days. X started the work alone. After how many days should Y join him, so that the work is finished in 16 days? |
| a. | | 15 days |
| b. | | 12 days |
| c. | | 11 days |
| d. | | 10 days
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| 12. | Krish and Karen together can complete a piece of work in 15 days. If Krish does thrice as much work as Karen in a given time. Find how much time Krish will take, when working alone? |
| a. | | 20 days |
| b. | | 18 days |
| c. | | 30 days |
| d. | | 25 days
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