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Abby has received scores of 85 88 87 and 80 on her algebra tests. What is the minimum score she must receive on the fifth test to have an overall test score average of at least 82?

Ronald Miller

in Self Improvement

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Theresa Perry on August 3, 2018

Let the minimum score you must receive on the 5th test to be equal to"x". In the first place, you need to add up all the scores of the tests. Then, dividethat sum by the number of scores in the test, this will give youraverage rating (what we want to be, at least, 82). Solve for x. (85 + 88 + 87 + 80 + x) ÷ 5 = 82 (340 + x) ÷ 5 = 82 (340 + x) ÷ 5 * 5 = 82 * 5 340 + x = 410 340 + x - 340 = 410 - 340 x = 70 I Hope this helped!


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