Martha is buying two shirts that each cost $20 at a local store. She is considering two options to purchase the shirts.
Option A: use the store sale- buy one shirt and get a second shirt 50% off the original price.
Option B: use a coupon for 30% off the entire purchase.
Martha will also pay 7% tax on her purchase.
Which option will cost less money?
First, let's calculate the price of the two shirts without any discounts or tax: $20/shirt * 2 shirts = $<<20*2=40>>40.
Option A: Using the store sale, Martha will pay full price for one shirt and receive 50% off the second shirt. Therefore, she will pay $20 + ($20 * 0.50) = $20 + $10 = $<<20+(20*0.50)=30>>30.
Option B: Using the coupon, Martha will receive 30% off the entire purchase. Therefore, she will pay $40 - ($40 * 0.30) = $40 - $12 = $<<40-(40*0.30)=28>>28.
Now, let's calculate the tax Martha will pay for each option. For both options, she will pay 7% tax on her purchase, so the tax amount will be $40 * 0.07 = $<<40*0.07=2.80>>2.80.
Option A: The total cost, including tax, will be $30 + $2.80 = $<<30+2.80=32.80>>32.80.
Option B: The total cost, including tax, will be $28 + $2.80 = $<<28+2.80=30.80>>30.80.
Therefore, option B will cost less money because the total cost, including tax, will be $30.80, which is less than $32.80 for option A.