Posted by **Kay** on Thursday, September 10, 2009 at 8:35pm.

If you earn the grades of 81, 84, 78, 80 in four tests what should your final test’s 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 to get an 81

Can someone please check my problem to see if it is correct if not please guide me thank you

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