Question

Ms. Marcus estimates that 330 people will attend the school play. There was an actual total of 400 people who attended the school play. Find the percent of error.

Answer 1

400 - 330 = 70 (difference)
p/100*400 = 70
p/100 = 70/400
p/100 = 0.175
p = 0.175*100 = 17.5% (percent of error)

Answer 2

17.5%

Explanation:

Subtract one value from the other. (i does not matter the sign)

400 − 330 = 70, so his error is 70

Now find the Percentage Error:

Divide by the exact value and make it a percentage:

70/400 = 0.175 = 17.5%