UPSC CDS 1 2021 Math Paper
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Direction:(52-55) The following table shows the marks of 90 students in a test of 80 marks:
| Marks | Number of students |
|---|---|
| 1-10 | 5 |
| 11-20 | 8 |
| 21-30 | 10 |
| 31-40 | 13 |
| 41-50 | 18 |
| 51-60 | 17 |
| 61-70 | 12 |
| 71-80 | 7 |
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Question : 55 of 100
Marks:
+1,
-0
The marks obtained by 5 students are 21, 27, 19, 26, 32. Later on 5 grace marks are added to each student. What are the average marks of the revised marks of the students?
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