Problema Solution
going into the final exam, which will count as two test, Sharon has test scores of 75, 86, 74, 61, and 92. what score does Sharon need on the final in order to have an average of 80?
Answer provided by our tutors
let x be the score of the final exam:
(79+86+74+61+92+x+x)/7 = 80
by solving we find:
x = 84
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Sharon needs to score 84 on her final exam to have an average of 80.