SOLUTION: Your test scores in one class are 81 and 85. What possible scores can you earn on your next test to have a test average between 83 and 88, ​inclusive?
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Question 1050959: Your test scores in one class are 81 and 85. What possible scores can you earn on your next test to have a test average between 83 and 88, inclusive? Answer by solver91311(24713) (Show Source):
If you have scores that average , then the sum of the scores must be . So on one end you have 3 times 83 is 249. Subtract the sum of 81 and 85, viz. 166, and the smallest score you can get on the third test to stay in the 83 to 88 range is 83. I'll let you figure out the other end for yourself.
John
My calculator said it, I believe it, that settles it
