SOLUTION: A student has scores of 87, 81, and 88 on the first 3 of 4 test. If the student wants to an average of exactly 87, what score must she earn on the fourth test

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Question 117394: A student has scores of 87, 81, and 88 on the first 3 of 4 test. If the student wants to an average of exactly 87, what score must she earn on the fourth test
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let T be the test score on the fourth test.
%2887%2B81%2B88%2BT%29%2F4=87
266%2BT=348
T=92
The student needs to get exactly a 92 to get exactly an 87 average.