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4 votes
4 votes
Ariel had $32 when she got to the carnival. After riding 6 rides, she had $20 left. What was the price of each ride?

User Jilouc
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1 Answer

10 votes
10 votes

Answer:

$2.

Explanation:

What the question is asking you to do, is to make an algebraic expression. First, we will start with what she had, which was $32. Next, it says that "after 6 rides, she had $20 left." The words "left" or "left over" imply subtraction in an equation. So, now we will put together what we have.

32 - 6r.

To explain the r, in algebra letters called variables represent mystery numbers that you have to solve and figure out. Anytime that you see a variable next to a number, it means you need to multiply the mystery number by the base number, which is 6 in this situation. We will use the letter r in this situation for rides. Now we will fit the 20 into the equation. So, we will now solve and complete the equation.

32 - 6r = 20.

First, subtract 32 from both sides of the equation to cancel out the +32. Doing this will balance the equation.

32 - 6r = 20

-32 -32

-12

Because of the subtraction sign in front of the 6, it is now negative. We now also need to cancel out that -6 to find the answer of r.

- 6r = -12

-6 -6

And, a negative divided by a negative equals a positive, so:

r = 2.

I hope this helps.

User Benjist
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