Mathematics · Averages
The average marks obtained by a group of 25 students was 36. One student left the group, as a result of which the average of the remaining students rose to 37.5. Soon after, another student joined the same group, as a result of which the average marks dropped to37.2. Find the average marks of the stude nt who left and the student who joined the group.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 122.5
- 230
- 337.5
- 415✓
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15
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