If the average score of 42 boys of a class is 135, while the average score of 98 girls is 124 of the same class. Find the combined average of the class.
Answer & explanation
Correct answer: option 1
Boys Girls
42 98
3 : 7 = 10
Avg 135 124
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Total 405 868
Avg (combined) = \(\frac{405 + 868}{10}\) = 127.3