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受欢迎的 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 35. How old is Joe?

解答

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 35. Ho w o l d i s J oe ?

解答

Joe^{'} s age is : 11 \frac{1}{5}

求解步骤

Translate the problem into an equation:

\frac{1}{2} x + x + 7 + x = 35

求解

x, \frac{1}{2} x + x + 7 + x = 35 : x = \frac{56}{5}

将假分式转换为带分数:

11 \frac{1}{5}

Joe^{'} s age is : 11 \frac{1}{5}

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