Question

Given Sara’s present age today is y years. Think of her age in the future or in the past. What will the following expression indicate?

$y+7,y-3,y+4\frac{1}{2},y-2\frac{1}{2}$

Answer 1

The values of $(y-3),(y-2\frac{1}{2})$ will be less than y.

$\therefore$ Her age in past can be $(y-3),(y-2\frac{1}{2})$.

The values of $(y+7),(y+4\frac{1}{2})$ will be greater than y.

$\therefore$ Her age in future can be $(y+7),(y+4\frac{1}{2})$.