CPM Homework Help : CC2MN Problem 8-61

Tires R Us is having a $30\%$ -off sale. Find the savings on a tire that regularly costs $\$45$ .

Hint:

Your percent ruler might look something like this:

A rectangle, divided into 10 equal squares, left end, labeled on top, 0%, on bottom, $0. Right end, labeled on top, 100%, and $45 on bottom. Above and between the third and fourth square, is 30%.

More Help:

Using the Math Notes as a reference, can you scale the rest of the ruler in order to find the $30\%$ equivalent in dollars? It may help to first find the value of $10\%$ .

Answer:

$30\%$ of $\$45$ is $\$13.50$ . Remember to show your work!