SOLUTION: if the average on four exam is 84 and the score on the first 3 exams are 90, 72 and 80 what is the fourth score exam

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Question 764116: if the average on four exam is 84 and the score on the first 3 exams are 90, 72 and 80 what is the fourth score exam
Answer by solver91311(24713) About Me  (Show Source):
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If the average on four exams is 84, then the sum of all 4 scores must be 84 times 4.

John

My calculator said it, I believe it, that settles it
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