Question
The average score of a class of boys and girls in
examination is X. The ratio of boys and girls in the class is 4:3. If the average score of the boys (X + 2), the average score of the girls is:Solution
Let there be 4x boys and 3x girls Total score = 4x + 3x = 7xX Total score of boys = 4x(X + 2) Total score of girls = 7xX – (4xX + 8x) = (3xX – 8x) Average score of girls = ((3xX – 8x))/3x
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