Considering there is tax, and there is basically no real way to get to 80 exactly using those two numbers, we need to just use the 25. the closest answer we would get would be 75. Plus tax, would be around 80.
We multiplied 25, by 3 to get 75, or added 25, three times. but we are not done yet. After that, we must multiply by 2, because the first customer bought TWO pizzas with 25$. So the answer is would be 6 pizzas.
Please correct me if I am wrong so I can edit and fix my answer! :)) Have a good day!
