math
posted by Anonymous .
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 in order to have an average of 81%
is this correct?
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