Question

For a party, Susan estimated there would be 14 people in attendance, but only 12 showed up. What was the percent error in her estimation?

10.7%
16.7%
10.3%
7.1%

Answer 1

16.7% (rounded)

Explanation:

Step 1. Make a proportion, which is 2/12 times x%/100

Step 2. Cross multiply = 2*100/12

Step 3. Solve = 16.(6) or, 16.7% rounded!

Answer 2

percent error = (error / actual) x100
(2 / 12) x 100 = 16.6 recurring
round up to 16.7