Martha estimated there were 89 marbles in a jar for a contest. the actual number of marbles in the jar was 111. what was the percent error of martha's estimation?

18.91 percent

Step-by-step explanation:

Percent error equation:     Difference       or    Difference/Actual

                                            Actual

The difference is the greater amount minus the smaller.

111 - 89 = 22

The actual is 111.

Now divide 22/111.

22/111 = 0.189 repeating

0.189 repeating = about 18.91 percent