MCQOPTIONS
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| 1. |
The average of marks obtained by 60 students in a test examination is 55, while that of another group consisting of 40 students is 45, then the average marks of all the students will be- |
| A. | 51 |
| B. | 55 |
| C. | 45 |
| D. | 50 |
| Answer» B. 55 | |