SOLUTION: this year in math the teacher will be giving 5 tests, each scored out of 100. if heather wishes to get an A+ average (90 or above, what is the lowest possible score she can receive

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Question 583534: this year in math the teacher will be giving 5 tests, each scored out of 100. if heather wishes to get an A+ average (90 or above, what is the lowest possible score she can receive on a test?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
if she gets 4 100s then 1 test can be as low as follows:
(400+x)/5=90
400+x=450
x=50
50 is the lowest possible score. and only on 1 test when the other 4 are perfect scores