If the sales tax is 3.5%, what is the cost of a pair of shoes with a price of $120? show work

a. $124.20 c. $540.00

b. $123.50 d. $420.00

A $124.20

Step-by-step explanation:

Sales tax is 3.5%.

Step 1: Find out what 3.5% of $120 is ...

First change 3.5% to a decimal

0.035

Now multiply $120 by 0.035

$120 (0.035) = $4.20

So sales tax is $4.20

Step 2 : Add the sales tax to the original purchase price to get the final sale price ...

$120 + $4.20 = $124.20

If you multiply 120 to 3.5% but in decimal form which is 0.035 you'll get 4.2 and then add the 4.2 and 120 together and you get your answer with is $124.20