SOLUTION: Please help me solve this problem. The answer I got for this one is over 100%, 102% to be exact. I don't know if I worked it out right. Do you add all the scores and divide by h

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Question 168662: Please help me solve this problem. The answer I got for this one is over 100%, 102% to be exact. I don't know if I worked it out right. Do you add all the scores and divide by how many scores there are?


What is the lowest score that Sam could earn on his next math test if he already has scores of 99, 87, 90, and 72 in his grade file and he wants to keep his course percentage above 90% Please show your work.
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Your answer is correct:
.
Let x = "next" math test score
.
(99+87+90+72+x)/5 > 90
(348+x)/5 > 90
348+x > 450
x > 450-348
x > 102