Question 86328
"Your grades are 76, 90, 85 and 87. If the next grade received counts twice, what grade do you need to maintain an average of 84 in the class?"
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There will be five grades.
Let the missing grade be "x".
EQUATION:
(76+90+85+87+2x)/5 = 84
(338 + 2x) = 420
2x = 82
x=41 (You need a 41 on the next test)
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Cheers,
Stan H.