Question

At Stores Unlimited, you will find everything you need at a 30% discount. A set of four bath towels is marked $25. How much will you pay for the set with a 5% sales tax?

Answer 1

`$18.38`

Explanation:

First, find the discount price (since tax comes last).

Because you have a 30% discount, you are paying 70% of the original price. This can be multiplied like so:
`x=$25*(1-0.3)`
`x=$25*(0.7)`.
`x=$17.5`

Now comes the sales tax. Because it is at 5%, you are paying `100%+5%` OR `105%` of the discount price. Now multiply them:

`$17.5*1.05=$18.375`

Rounded to the nearest hundredth: `$18.38`