Algebra-2

Let's assume the speed of the second plane is  miles per hour. Then the speed of the first plane is  miles per hour.

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

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

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

We are given that the time taken by both planes is the same. So we can set up the following equation:

Click "Show Answer" to reveal the answer and analysis