It seems to me, that if you were to add the price of all three items together, then multiply by 7.5%, you'd have the answer. Remember that 7.5% = .075 ... in other words, that is the number you would multiply the sum of the items by. Does that help?



Fo you want multiple thanks???
Answer:
The $3.20 one
Step-by-step explanation:
The $3.20 one is cheaper because you get more.
The price per cubic inch for the extra large tub will probably be 2000