SOLUTION: If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number?

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 Question 29832: If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number? Answer by sdmmadam@yahoo.com(530)   (Show Source): You can put this solution on YOUR website!If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number? There are three numbers: Z, Y and an unknown R The average of the three numbers is V Therefore (Z+Y+R)/3 = V { here Z,Y and V are known) Multiplying by 3 (Z+Y+R) = 3V R = (3V-Z-Y) The remaining number is given by (3V-Z-Y) Verification: The average of the three numbers = [Z+y+(3V-Z-Y)]/3 = 3V/3 = V which is correct.