MCQOPTIONS
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| 1. |
A, B and C can complete a task together in 10 days. A and B would need 12 days if only the two of them worked, while B and C would take 20 days if only the two of them worked. If B worked alone, how many days would she take to complete the task? |
| A. | 30 |
| B. | 22 |
| C. | 45 |
| D. | 20 |
| Answer» B. 22 | |