The ratio on the lines state: gallons to cups is 4:64 This means for every 4 gallons, there are 64 cups. If you divide 64 by 4 you get 16. Now you know for every 1 gallon, there are 16 cups. Multiply 16 by 3 so you can figure out how many cups there will be for every 3 gallons. The answer is 48 cups. For every 3 gallons, there will be 48 cups.
so to find the discounted price you take the original price and multiply it by the discounted percentage, so to find the original price you take $36 and divide it by 60% and you get $60 as the undiscounted price of the tickets