SOLUTION: The product of my number and twice my number is 72. What is my number? The answers given are: A)6 B)12 C)24 D)72 I must be setting this up wrong. I thought the Product of "m

Question 607103: The product of my number and twice my number is 72. What is my number?
The answers given are: A)6 B)12 C)24 D)72
I must be setting this up wrong. I thought the Product of "my number" meant "my number" times itself. So I was setting up the problem as X^ + 2X = 72
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
The product of my number and twice my number is 72. What is my number?
The answers given are: A)6 B)12 C)24 D)72
.
Let x = "my number"
then
x(2x) = 72
2x^2 = 72
x^2 = 36
x = 6
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