Question 63

The average score of boys in an examination of a school is 71 and that of girls is 73. The average score of the school in that examination is 71.8. Find the ratio of the number of boys to the number of girls that appeared in the examination.

Solution

This problem can be solved easily by allegation method. 

Ratio of boys to girls,

$$\Rightarrow$$ 1.2 : 0.8 = 3:2

Hence, option C is the correct answer.


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