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

解答

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

解答

Emma^{'} s age is : 24

求解步骤

Translate the problem into an equation:

\frac{1}{2} x + x + 4 + x = 54

求解

x, \frac{1}{2} x + x + 4 + x = 54 : x = 20

找到 Emma's age

: 24

Emma^{'} s age is : 24

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