There are 128 ounces in a gallon. 128 x 1.5 = 192
15 US gallons = 1,920 ounces.
15 US gallons = 1,920 US fluid ounces.
if 12 ounces treats 15 gallons, 15 divided by 5 is 3, so just divide 12 by 3, and 4 is your answer.
For 1 quart per 100 gallons, in 15 gallons you would need 0.15 quarts. Since there are 32 ounces in a quart, you would need 4.8 ounces for 15 gallons.
2.5 oz
4/15 = 0.266666....... Divide 15 into 4 to find how many ounces for one gallon.
20 gallons = 2,560 ounces.
13.2 gallons is 1,689.6 ounces.
8320 ounces is 65 gallons.
169 ounces is 1.32 US gallons.
That is 2.375 gallons
249.6 ounces in 1.95gallons