Question

Given sara age today by y years. Think of her age in future or in the past. What will the expression indicate

Answer 1

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Sara’s present age = y years

y + 7 represents her future age, i.e., her age after 7 years.

y – 3 represents her past age, i.e. her age 3 years ago.

y + 4 1/2 represents her future age, i.e her age after 4 1/2 years.

y – 2 1/2 represents her past age, i.e. her age 2 1/2 years ago.