Question

Martha estimated there were 93 marbles in a jar for a contest. The actual number of marbles in the jar was 115. What was the percent error of Martha's estimation?
80.87%
23.66%
19.13%
22%

Answer 1

Take the difference in the values, divided by the total marbles in the jar

Answer 2

multiply that by 100

Answer 3

She was (115-93) off the value, out of 115 actual marbles.

Answer 4

Percent error = \(\dfrac{\left|\text{actual - theoretical}\right|}{\text{theoretical}} \times 100\%\)

Answer 5

\[\frac{ 115 - 93 }{ 115 } *100 = ~~~??~~percent\]