Question

Skylar's grades on four math tests are 85, 78, 77, and 69. What does Skylar need to score on the next test in order to have a mean score of 80?

Answer 1

Because the scores she got on her test (85, 78, 77, and 69) she would have to score a 90, then on the next text to score a 80.

Answer 2

Hello there.

Skylar's grades on four math tests are 85, 78, 77, and 69. What does Skylar need to score on the next test in order to have a mean score of 80?

Answer: 85 + 78 + 77 + 69 = 309.
80 x 5 = 400.
400 - 309 = 91.
She needs to score 91.

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