Mathematics · Averages and Mixtures
The average marks obtained by an entire class is 'z - 5'. If the average marks obtained by the boys and girls in the same class are 'z - 6' and 'z + 2' respectively, find the ratio of the number of girls to the number of boys in the class.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12 ∶ 7
- 21 ∶ 7✓
- 34 ∶ 7
- 43 ∶ 7
Correct answer
1 ∶ 7
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