Algebra-2

Let's assume Greg's speed is  miles per hour. Then Emily's speed is  miles per hour.

We know that time , where  is the distance and  is the speed.

For Emily, who drives a distance  miles at a speed of  miles per hour, the time taken  hours.

For Greg, who drives a distance  miles at a speed of  miles per hour, the time taken  hours.

Since the time taken by both Emily and Greg is the same, we can set up the following equation:

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