A factory worker tested the speedometer of a new car by driving it a certain distance at a constant speed. The percent error was too large, so the car was sent back to be fixed. What speed did the speedometer show? Key information:

● The car went 10 miles.

● The car drove for 8 minutes.

● To pass the test, the speedometer must show within 2% of the correct speed.

● The speedometer was showing a speed slower than the car was actually going.