Problema Solution
Bob's scores on his first four tests were 80, 65, 87, and 75. What will he have to score on his next test to obtain an average of at least 80 for the semester?
Answer provided by our tutors
let 'x' represent the score of Bon on his next test
(80 + 65 + 87 + 75 + x)/5 = 80
by solving we find
x = 93
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Bob has to score 93 on his next test.