SOLUTION: A student earns an 82% on her first test. How many consecutive 100% test scores does she need to bring her average up to 95%? Assume that each test has equal impact on her average

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Question 1010778: A student earns an 82% on her first test. How many consecutive 100% test scores does she need to bring her average up to 95%? Assume that each test has equal impact on her average grade.
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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x=number of additional tests
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(82+100x)/(x+1)=95
82+100x=95(x+1)
82+100x=95x+95
100x=95x+13
5x=13
x=13/5=2.6
ANSWER: She will have to score 100%
on 2.6 consecutive tests to average 95%.