Ali has scored 88, 94, 82, and 83 on his previous four tests. What score does he need on his next test so that his average (mean) is 86?

asked Nov 27, 2020 153k views

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5 votes

Answer:

Explanation:

(94 + 88 + 82 + 83 + x) ÷ 5 = 86

(347 + x) ÷ 5 = 86

347 + x = 86 × 5 ➡ 347 + x = 430

x = 430 - 347

Yasei No Umi answered Dec 4, 2020

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