Mark estimates that the distance from his house to his school is 15.5 mi. The actual distance is 14.5 mi. To the nearest tenth of a percent, what is the percent error in Mark's estimate?

Accepted Solution

The error is 1.0 mile, too large.

Write the ratio 

1.0 mile
--------------- = 0.069
14.5 miles

Mark's estimate is 6.9% greater than the actual distance.