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Three numbers have an average of 15. If two of the numbers is 10 and 12, then what is the other number?

Three numbers have an average of 15. If two of the numbers is 10 and 12, then what is the other number?
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three numbers have an average of 15. If two of the numbers is 10 and 12, then what is the other number?

User Markstewie
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1 Answer

3 votes
15*3=45, 45-10-12 is 23. the last number is 23.
User Veener
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