Question

Lydia guessed there were 180 jelly beans in a container.

There were actually 220 jelly beans in the container.
What was Lydia's percent error?

Answer 1

18.18% error

Explanation:

Use the percent error formula,

% error = | (measured - accepted) / accepted | x 100

Plug in the values we know:

% error = | (180 - 220) / 220 | x 100

% error = | - 0.18 | x 100

% error = 18.18% error