A pack of cinnamon scented pencils sells for seven dollars what is the sales tax rate if the total cost of the pencils is $7.56

3 answers

8% because 7 x 8 = 56 (so, 7 x 8% = 7.56).

Hope this helps :)
Khan Academy has a lot of video on solving Tax-related Problems!!
7 + r*7 = 7.56.
7r = 0.56,
r = 0.08 = 8%.