You have saved $50 over the last two weeks and decide to treat yourself by buying some new clothes.

You have saved $50 over the last two weeks and decide to treat yourself by buying some new clothes. You go to the store and find two shirts and three pairs of jeans you like. The two shirts are buy-one-get-one half off, at $22.35 each. The three pairs of jeans are buy-two-get-one-free, at $23.70.
Tax Rate for Harmonized Sales Tax is 13%

a. What would be the total for the two shirts (don’t forget to include taxes)?

b. What would be the total for the three pairs of jeans (don’t forget to include taxes)?

c. Which would you buy and why?

a. Half of 22.35 is 11.18
So two shirts cost:
22.35 + 11.18 = 33.53
Cost with Tax of 13% is:
33.53 * 1.13 = 37.89

b. Three pairs of jeans are calculated by cost of 1 pair times 2 jeans and you get the third one free:
23.70 * 2 = 47.40
Cost with Tax of 13% is:
47.40 * 1.13 = 53.56

c. Calculate unit cost, which is cost per item
Unit cost of Shirts = 37.89 / 2 = 18.95
Unit cost of Jeans = 53.56 / 3 = 17.85
Buy the jeans since they have a lower unit cost