Question

Ky wants to buy three shirts, which were originally priced $49.96 each. The store will discount the price of the third shirt and then apply a 7.1% tax to the total cost of all three shirts. Including the tax, what will be the mean cost of each shirts? Show your work.

Answer 1

The price of the first shirt is PriceS1=$49.96.
The price of the second shirt is PriceS2=$49.96.
The price of the third shirt is PriceS3= $49.96 - ($49.96*%discount)
The total price is shown below:
Total Price= $49.94 + $49.96 + ($49.96-($49.96*%discount))
Total cost, 7.1% should be applied to the total price. Thus, we have:
Total cost= Total price + (total price*0.007)
Mean cost of each shirt, we divide the total cost by 3:
Mean cost = Total cost/3