If 2 ounces goes into 100 gallons how many ounces is needed for 3000 gallons

If 2 ounces goes into 100 gallons how many ounces is needed for 3000 gallons?

Set up a proportion of ounces to gallons. We set o as the number of ounces for 3000 gallons.
2/100 = o/3000

Using our proportion calculator, we get o = 60.