math
posted by Kay .
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
324323=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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