Question

They are 50 students in a class of which 40 are boys and rest are girls. The average weight of the students in the class of 44kg and the average weight weight of the girls is 40kg . Find the average weight of the boys

Answer 1

average weight of class 44kg
average weight of girls is 40kg
rest average weight is 4kg
we know that average weight is no. of boys divided by rest of the weight =4×12
so the average weight of boys is 48kg

Answer 2

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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