Mathematics · Averages
The average marks obtained by a group of 45 students were 16.2. One student left the group, as a result of which the average of the remaining students rose to 16.5. Then another student joined, due to which the average marks of the group dropped to 16.4. What is the average of the marks obtained by the student who left and the student who joined?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 16
- 215
- 312.5
- 47.5✓
Correct answer
7.5
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