SOLUTION: Jeff scored a 82, 88, 95, and 91 on four science exams. What does he have to score on the next exam to get a 90% or better average in the class?
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Question 611631: Jeff scored a 82, 88, 95, and 91 on four science exams. What does he have to score on the next exam to get a 90% or better average in the class?
In order to have an average of 90 on 5 exams, the sum of the scores on all 5 exams must be 5 times 90 is 450. Take the sum of the first four exams, then...
You take it from there.
John
My calculator said it, I believe it, that settles it
