What is the value of (-3..56) with the work shown

the speed of the wind is 1.5 mph

Step-by-step explanation:

Let x represent the speed of the wind.

Time = distance/speed

Craig can ride his bike at an average rate of 14 miles per hour in calm air. Traveling with the wind, his total speed would be (14 + x) mph

Time taken to travel 62 miles with the wind would be

62/(14 + x)

In the same amount of time it took him to ride 50 miles against the wind. His total speed would be

(14 - x) mph. Time taken to travel 50 miles is

50/(14 - x)

Since the time is the same, then

62/(14 + x) = 50/(14 - x)

Cross multiplying, it becomes

62(14 - x) = 50(14 + x)

868 - 62x = 700 + 50x

- 62x - 50x = 700 - 868

- 112x = - 168

x = - 168/-112

x = 1.5