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人気のある Word Problems >

Lauren's age is half of Joe's age. Emma is seven years older than Joe. The sum of Lauren, Emma, and Joe's age is 54. How old is Joe?

解

L a u re n^{'} s a g e i s ha l f o f J o e^{'} s a g e . E mma i s se v e n ye a rs o l d er t han J oe . T h e s u m o f L a u re n, E mma, an d J o e^{'} s a g e i s 54. Ho w o l d i s J oe ?

解

Joe^{'} s age is : 18 \frac{4}{5}

解答ステップ

Translate the problem into an equation:

\frac{1}{2} x + x + 7 + x = 54

x

を解く

\frac{1}{2} x + x + 7 + x = 54 : x = \frac{94}{5}

仮分数を帯分数に変換する:

18 \frac{4}{5}

Joe^{'} s age is : 18 \frac{4}{5}

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