Given Sara’s age today to be $y$ years. Think of her age in the future or in the past. What will the following expression indicate?
$y + 4 \frac{1}{2}$

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Solution

As it is given that Sara’s age today is $y y e a r s .$
$y + 4 \frac{1}{2}$ represents Sara’s age $4 \frac{1}{2}$ years in the future.

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