Trayvon enters a competition to guess how many balls are in a barrel. Trayvon’s guess is 63 balls. The actual number of balls is 60. What is the percent error of Trayvon’s guess?
Trayvon's guess, 63, is 3 higher than the actual number of balls. We compare 3 to 60: 3/60, or 1/20. Multiplying this result by 100%, we get 5%. The percent error is 5%.
