Question

Sadye has the Algebra test scores shown: 89, 88, 78, 95, and 92. If her goal is to have a test average of 90
or higher what is the lowest score she can make on her next test and still achieve her goal? Note: scores
are not rounded.

Answer 1

Do you have any answer choices?

Answer 2

Assuming all scores are weighted the same

(Sum of scores) / (# of scores) = average

Let’s let the score she hasn’t earned yet be x

Filling in the formula

(89 + 88 + 78 + 95 + 92 + x)/6 ≥ 90

Solve for x. Because the final average doesn’t get rounded, round x up to the nearest whole # in order to guarantee at least 90.