SOLUTION: After six biology tests, Ruben has a mean score of 78. What score does Ruben need on the next test to raise his average to 80?
--I am confused on how to set this up and get it s
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-> SOLUTION: After six biology tests, Ruben has a mean score of 78. What score does Ruben need on the next test to raise his average to 80?
--I am confused on how to set this up and get it s
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Question 679277: After six biology tests, Ruben has a mean score of 78. What score does Ruben need on the next test to raise his average to 80?
--I am confused on how to set this up and get it started. Is there a formula I need to use?
Thanks! Answer by ReadingBoosters(3246) (Show Source):
You can put this solution on YOUR website! x is the total score on the first six tests.
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x = 468
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y is the score needed on the next test
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468+y = 560
y = 560-468
y = on the next test
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