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#
5 numbers have an average of 16. If the first 4 numbers have a sum of 68, what is the 5th number?

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Question:

A
12

explanation

The average of 5 numbers is the sum of the numbers divided by 5. Multiply the average by 5 to find the sum; subtract to find the 5th number.

\(sum\over5\) =16

sum = 16 × 5 = 80

80 − 68 = 12

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