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05-12-2021
Mathematics

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

Answer with supporting work:

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05-12-2021

Answer:

Step-by-step explanation:

(12+10+x)/3=15

15*3=12+10+x

45-12-20=x

X=23

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