MCQOPTIONS
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| 1. |
A can complete a task alone in 9 days while B takes 13.5 days to do it by herself. Together with C it takes them 4.5 days to complete the task. If C and D together can complete the task in 18 days, then how many days will D need to complete the task by herself? |
| A. | 60 |
| B. | 54 |
| C. | 48 |
| D. | 45 |
| Answer» C. 48 | |