Question

Marco estimated that he took his dog on a 2.5 mile walk. When he drove the same route in his car, he found out that it was 2.65 miles. What is the percent error between Marcos estimate and the actual amount?

Answer 1

6%

Explanation:

The percent error is 2.65-2.5 over 2.5, or 0.15/2.5. Multiply top and bottom by 40, to get 6/100 or 6% error.