SOLUTION: Bringing up your average. Felix scored 52 points and 64 points on his first two tests in Sociology 212. What must he get on the third test to get an average for the three tests

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Question 1047570: Bringing up your average.
Felix scored 52 points and 64 points on his first two tests in Sociology 212. What must he get on the third test to get an average for the three tests of at last 70? All tests have a maximum of 100 points.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
average=total/n, n=3, average desired is 70
3*70=210, and that must be the minimum for the total.
210-(52+64) on first two tests is 94.
He needs a 94.
Also,
the first test was 18 below the mean, and the second was 6 below. The third test must be (18+6=24) above the mean or 94.