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My friend is 4 years older than me. The sum of our ages is 24 . How old am I?
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Suppose I am $x$ years old and so my friend is $x-4$ years old. Then $x+(x-4)=24 \Longrightarrow 2 x-4=24 \Longrightarrow$ $2 x=24+4=28 \therefore x=28 \div 2=14$.
by Diamond (58,473 points)
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In order to solve the question, we need to create an equation as this is a word problem.

The person age is $x$

The friend is $x+4$

Sum of is plus therefor:

$x+x+4=24$

$2x+4=24$

$2x=24-4$

$2x=20$

$x=20/2$

$x=10$
by (138 points)

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