Your ordering t shirts from a catalog each t shirt cost 15$ the cost of shipping is 6$ no matter how many you buy the total cost including tax is 111$ how many t shirts did i buy (show how you did it please)
first we do 15+6 because that is the amount of 1 shirt in total which is 21. Then we do 21 divided by 111 which is 5 shirts and the extra 6 dollars leftover are taxes
