Question

The length of a solar car race track is supposed to be 4.8 meters.

Unfortunately, the carpenter made it 4.2 meter. What is the percent error?

Answer 1

-12.5%

Explanation:

A percentage change is computed using ...

percent change = ((new amount) -(original amount))/(original amount) × 100%

We want to find the percentage change from 4.8 m, so we have ...

percent change = (4.2 -4.8)/4.8 × 100% = -.6/4.8×100% = -12.5%

The carpenter made the track 12.5% too short.