Question

To clean a tank, 3/4 cup of disinfectant is needed for every 2 gallons of water. How many cups of disinfectant are needed for 20 gallons of water?

Answer 1

7 1/12 cups of disinfectant
Hope this helps, cheers!

Answer 2

15/2 cups of disinfectant! Or 7 1/2 cups!