SOLUTION: Mean of 3 scores is 4 if the sum of first two scores is 6 find the value of third score

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Question 1061384: Mean of 3 scores is 4 if the sum of first two scores is 6 find the value of third score


Answer by Theo(13342) About Me  (Show Source):
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average of 3 scores is 4, so the sum of the 3 scores is 4 * 3 = 12.
the sum of the first two scores is 6.
the last score must be 12 - 6 = 6
first two scores is 6 and last score is 6 for a total of 12.
12 divided by 3 is equal to 4. which is the average of the 3 scores.