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Phổ biến Word Problems >

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

Lời Giải

30 p erce n t a g e o f t h e c l a ss a re 10 y a rs o l d an d t h e o t h er 21 c hi l d re n a re 11 ye a r o l d h o w man y c hi l d re n w ere t h e c l a ss

Lời Giải

Percentage : \frac{1}{3}

Class^{'} s age is : y

Các bước giải pháp

Translate the problem into an equation:

30 x = 10

Giải

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

Tìm age

Percentage : \frac{1}{3}

Class^{'} s age is : y

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