Dan is twice the height of his sister Julie plus four inches. Dan is 72 inches tall. How tall is Julie?
1 Answer
Dec 1, 2017
34 inches
Explanation:
Let’s make J represent Julie’s height
Since Dan is two times plus 4 inches the height of Julie, an expression that could represent this is 2J +4
Dan is a total of 72 inches, so we can use this info to find J. The expression should look something like this:
Isolate J to find Julie’s height, so you would want to start by subtracting 4 on both sides then divide both sides by 2.
Since, once again, J represents Julie, Julie’s height is 34 inches