Question

The mean marks (out of 100) of boys and girls in an examination are 70 and 73 respectively. if the mean marks of all the students in the examination is 71, find the ratio of the number of boys to the number of girls.

Answer 1

Hi there!

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What is Mean?

The average of a given set of numbers is called the Arithmetic mean, or simply the mean, of the given numbers.

Mean = $\frac{Sum \: of \: observations }{Number \: of \: observations }$

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