Question:medium
In a class of 100 students, there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average of the girls?
In a class of 100 students, there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average of the girls?
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Always convert averages into total sums first—this avoids mistakes.
Updated On: Apr 30, 2026
- $73$
- $85$
- $68$
- $74$
- $65$
Show Solution
The Correct Option is C
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