Question

Hank's speedometer reads 60 miles per hour, but during a road test he finds that he

was actually driving 56 mph. What is the percent error in Hank's speedometer?
Show your work.

Answer 1

-6.6666666666667%

Explanation:

Subtract the accepted value from the expiremental value

56 - 60/60 = -4/60

Divide the answer by the accepted value

-4/60 = -6.6666666666667%

Remove the negative symbol

6.6666666666667%, the answer is 6.6666666666667%

Answer 2

percentage error = 7.14%

Explanation:

Hank's speedometer reads 60 miles per hour, but during a road test he finds the he was actually driving 56 mph.

estimated/ read value = 60 miles per hour

actual value/correct value = 56 miles per hour

error = estimated or read value - correct value/actual value

error = 60 - 56 = 4 mph

percentage error = error / correct value × 100

percentage error = 4/56 × 100

percentage error = 400/56

percentage error = 7.1428571429%

percentage error = 7.14%