Problema Solution
Katrina has scores of 86, 70 and 75 after three tests. Her final exam counts as two test scores. What score must she make on her final to have an average of 71 or greater?
Answer provided by our tutors
Let 'x' represent the score of the final exam.
(86 + 70 + 75 + 2x)/5 >= 71
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click here to see the equation solved for x
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x >= 62
Katrina must score 62 or more on her final exam.