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Digiron [165]
3 years ago
9

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

ual grade of 81%. What is Addies actual report card grade?
Mathematics
1 answer:
inessss [21]3 years ago
4 0
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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