Gabbyandarchie9940 Gabbyandarchie9940

20-09-2019
Mathematics

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Addies has 7 grades on her report card. The overall average is 77%. One grade was incorrectly recorded as 18% instead of the actual grade of 81%. What is Addies actual report card grade?

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teamtommo teamtommo

21-09-2019

77(7) = 539, the total points of all her tests

539 - 18 + 81 = correct total points = 602

602/7 = 86 which is the new average

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