Question

Lydia received a parking ticket because she parked 10 feet from a fire hydrant. She had estimated her distance from the fire hydrant as being the minimum allowable distance, which is 15 feet. What was her percent error?

Answer 1

Try
\[error \over distance\]
where error is the distance of her mistake (15 feet - 10 feet)
and distance is the actual distance (10 feet)