SOLUTION: Noah Thompson has a average of 92 for the last three math quizzes. What must he make on the fourth quiz to raise his average 94?
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Question 985546: Noah Thompson has a average of 92 for the last three math quizzes. What must he make on the fourth quiz to raise his average 94?
Found 2 solutions by stanbon, solver91311:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Noah Thompson has a average of 92 for the last three math quizzes. What must he make on the fourth quiz to raise his average 94?
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Equation:
(3*92+x)/4 = 94
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276+x = 376
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x = 100 (score needed)
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Cheers,
Stan H.
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Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The sum of the three that average 92 is 3 times 92. The sum of the four, if the average must be 94, must be 4 times 94.
John
My calculator said it, I believe it, that settles it
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