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Average - Data Intensity 2 :: Discussion
| 14. | The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students? | |
| A. | 50 | |
| B. | 47.5 | |
| C. | 59 | |
| D. | 52.5 | |
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