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.

You missed a key part

Buy two and get 3rd one 50 off

So

49.96+49.96+24.98=124.9*.071=8.8679 (Tax) now add 124.9+8.8679=133.7679

=24.98

7.1/100==.071

Each Shirt cost

49.96*.071=3.54716 add the cost of shirt 49.96=53.50716 total mean of shirt

49.96*.071 = above cal. 53.50716 total mean of shirt

24.98*.071=1.77358+24.98=26.75358 total mean