Practice!

Sample Problem

On an exam, Ethan got an average of 92.8 points in the following subjects.

Subjects

Math

Writing

History

Physics

Chemistry

Scores

95

98

?

87.5

88

What was Ethan’s History score?

  points

Solution

Total score for the five subjects: 92.8 × 5 = 464 points

Subtract all other scores to find History score: 464 – (95 + 98 + 87.5 + 88) = 95.5 points