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A student has test scores of 92%, 87%, and 78%. what must she need to score on thenlast test to maintain 80% or better?

A student has test scores of 92%, 87%, and 78%. what must she need to score on thenlast test to maintain 80% or better?
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a student has test scores of 92%, 87%, and 78%. what must she need to score on thenlast test to maintain 80% or better?

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User Wolf Paulus
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1 Answer

4 votes
We'll solve this equation in order to find the score of the 4th test, which we denote with x.
(92+87+78+x)/(4)=80. Solving it we find that x=63. And it is the final answer for this problem.
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User BenBarnes
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