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| 1. |
The average weight of 63 notebooks kept in a box is 6.3 kg. When a new notebook is placed in the box then the average is 6.4 kg. Specify the weight of the new notebook. (In Kg) |
| A. | 12.7 |
| B. | 12.5 |
| C. | 12.1 |
| D. | 12.3 |
| Answer» B. 12.5 | |