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Question
Ms. Ellis expected 50 families to attend parent–teacher conferences, but 60 families attended. What is the percent error?

Sagot :

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Answer: 20%

Step-by-step explanation:

The expected value was 50, the value in reality was 60, so

(60 - 50) / 50

= 10/50

= 1/5

To convert to a percent we multiply by 100:

= 20%.

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