Question

Julio rented a bike from Raving Riders' Bikes. It cost $12 plus $2.20 per hour. If Julio paid $23, for how many hours did he rent the bike?

Answer 1

To solve this problem, we can set up an equation using the variable x to represent the unknown number of hours Julio rented the bike for. We know that Julio paid 23 dollars total, so this must be one side of the equation. This should be set equal to the standard 12 dollars plus the added 2.20 multiplied by the number of hours Julio rented the bike for (represented by x). This is as follows:

23 = 12 + 2.20x

Now, we must solve this equation. To begin this process we must subtract 12 from both sides of the equation.

11 = 2.20x

Finally, we must divide both sides of the equation by 2.20 because we must cancel out the coefficient on the variable x in order to isolate it.

5 = x

Therefore, Julio rented the bike for 5 hours total.

Hope this helps!