SOLUTION: A student has an average of 80 in his first three exams. What score must he get in the fourth exam to raise his average to 85?

Question 977244: A student has an average of 80 in his first three exams. What score must he get in the fourth exam to raise his average to 85?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

If his average on the first three exams is 80, then his total score for those three exams must be 3 times 80. If he wants an 85 average after one more test, then the total for all 4 exams must be 4 times 85.

John

My calculator said it, I believe it, that settles it

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