CBSE Class 10 Maths (Standard) 2025 · Paper 30(B)/S · Question 31
The mean of the following frequency distribution is . Determine the values of and .
| Class | Frequency |
|---|---|
| 0 - 20 | 5 |
| 20 - 40 | |
| 40 - 60 | 10 |
| 60 - 80 | |
| 80 - 100 | 7 |
| 100 - 120 | 8 |
| Total | 50 |
Answer
and .
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