Question

Ann paid $5.20 in sales tax for an $80 purchase.What percent sales tax did Ann pay on her purchase?

Answer 1

6.5%

You can use proportion:

80 is 100%

5.20 is x %

80/5.20=100/x

80x=5.20*100

80x=520

x=6.5

So Ann paid 6.5% sales tax on her purchase.