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30percentage of the class are 10 yars old and the other 21 children are 11 year old how many children were the class

Solution

30percentage of the class are 10 yars old and the other 21 children are 11 year old how many children were the class

Solution

Percentage : \frac{1}{3}

Class^{'} s age is : y

Solution steps

Translate the problem into an equation:

30 x = 10

Solve for

x, 30 x = 10 : x = \frac{1}{3}

Find age

Percentage : \frac{1}{3}

Class^{'} s age is : y

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