Question

Susie is 5 times the age the she was twenty years ago. How old is she now?

Answer 1

Susie is 25 years old now.

Step-by-step explanation:

Let,

Age of Susie = x

Age of Susie twenty years ago = y = x-20

According to given statement;

Susie is 5 times the age the she was twenty years ago.

x = 5y    Eqn 1

Putting y=x-20 in Eqn 1

$x=5(x-20)\\x=5x-100\\x-5x=-100\\-4x=-100$

Dividing both sides by -4

$\frac{-4x}{-4}=\frac{-100}{-4}\\x=25$

Susie is 25 years old now.

Keywords: linear equation, division

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