5. A van and a truck both drove from Town A to Town B. The distance between Town A and Town B is 200 miles. The van left Town A 1 ½ hours earlier than the truck. The van reached Town B 2 ½ hours before the truck. The truck traveled at an average speed of 40 miles per hour. What was the average speed of the van?

Solution:

Speed of van: x

200/40 -1 = 200/x

x = 50

So Speed of van: 50 mph