840 half-gallons.
1 gallon = 4 quarts so 420 quarts = 420/4 gallons = 105 gallons
420 quarts.. ya 420
420 gallons per second is about 1,589.7 liters per second.
420 (feet^3) = 3 141.81818 US gallons
20 half-gallons.
500 gallons.
To find 4 percent of a value, multiply the value by 0.04. In this instance, 0.04 x 420 = 16.8. Therefore, 4 percent of 420 gallons is equal to 16.8 gallons.
There are two half gallons in a gallon.
15.5 US Gallons
10 liters = 2.64172 US gallons or 2.19969 imperial gallons= 5.28344 US half gallons = 4.39938 imperial half gallons
800 liters = 211.338 US gallons = 175.975 imperial gallons= 422.675 US half gallons = 351.951 imperial half gallons
There are 21 gallons in a half-barrel of crude oil.