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Basic Maths Data Intensity 4 :: Discussion
| 12. | A can do piece of work in 30 days while B can do it in 40 days. In how many days can A and B working together do it ? | |
| A. | 70 days | |
| B. | 120/7 days | |
| C. | 50 days | |
| D. | 45 days | |
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