Melanie buys a carrying case for her new laptop computer. The retail price is $24.50 and the sales tax is 7%. What is the amount of the sales tax?

1. 7% can also be written as. 07

2. To figure out what 7% of 24.50 is than you need to multiple 24.50*.07.

3. 24.50*.07 = 1.715 or $1.72

4. Another way to think about this is as follows:

X/24.50 = 7/100 and solve for X

24.50*7 = 100x

171.50 = 100x

171.50/100=x

1.715 = X

24.50*.07 = 1.715 or $1.72