Algebra-2

Let's assume the speed of Plane B is  miles per hour. Then the speed of Plane A is  miles per hour.

We use the formula , where  represents the time taken,  represents the distance traveled, and  represents the speed.

For Plane B, which travels a distance  miles at a speed of  miles per hour, the time taken  hours.

For Plane A, which travels a distance  miles at a speed of  miles per hour, the time taken  hours.

We are given that it takes Plane A  hours less to complete the trip than Plane B. So we can set up the following equation:

To clear the fractions, we multiply through by :

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