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The average of 4 numbers is 9. If one of the numbers is 7, What is the sun of the other 3 numbers?

User RCE
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Answer:

Explanation:

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If 4 numbers have an average of 9, then total of the 4 numbers is 4 * 9 = 36.

If one of the 4 numbers is a 7, then

7 + x = 36 where x is the sum of the other 3 numbers.

7 + x = 36 Subtract 7 from both sides

7- 7 +x = 36 - 7

x = 29

Answer 29

User Kockiren
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