MCQOPTIONS
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| 1. |
A and B can together complete a task in 18 hours. After 6 hours A leaves. B takes 36 hours to finish rest of the task. How many hours would A have taken to do the task if he worked alone? |
| A. | 54 |
| B. | 45 |
| C. | 21 |
| D. | 27 |
| Answer» E. | |