SOLUTION: The average of two numbers is 60. If 40 is one of the numbers and it is removed from the set, what is the value of the other number?

Question 858695: The average of two numbers is 60. If 40 is one of the numbers and it is removed from the set, what is the value of the other number?
Found 2 solutions by rothauserc, ben720:
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
let x be the other number
(40 + x) / 2 = 60
40 + x = 120
x = 80

Answer by ben720(159) (Show Source): You can put this solution on YOUR website!
Let x=the other number
Because the average is 60, and the average is found by dividing the sum by the number of values,

To isolate x, multiply both sides by 2

Subtract 40 from both sides

The other number is 80
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