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3 years ago

10

Lynn has grades of 93, 75, and 86 on three math tests. What grade must she make on the next test to have an average of exactly 8

1 for the four tests?

1 answer:

deff fn [24]3 years ago

5 0

(93+75+86+x)/4=81
93+75+86+x=324
The sum of the scores is 324. Now solve for x:
254+x=324
x=70

The answer is 70

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