Let's first find the time of the return trip by subtracting 1.94 from 3.543.54−1.94=1.5hours
The return trip took 1.5 hours. We will now determine the speed of the plane on the return trip. Since it helps the plane to move faster, the plane's speed can be expressed as shown below.
Note that the distance is still 700 miles. Finally, to find the value of x, we can substitute the values into the equation s=td.