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September 2, 2015

Homework Help: math

Posted by Anonymous on Wednesday, September 9, 2009 at 11:41pm.

If you earn the grades of 81, 84, 78, 80 in four tests what should your final testís score be in order to have an average of 81%?

.81x400=324
Need a total of 324 pts
Test grades so far 81,84,78,80 = 323
324-323=1
You need at least one more point in order to have an average of 81%

is this correct?

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