A 1-liter bottle contains a mixture that is 1/4 antifreeze, 3/4 water.
A 2-liter bottle contains a mixture that is 1/3 antifreeze, 2/3 water.
I pour the contents of the two bottles into my car's empty radiator.
What is the percentage of water in the radiator?
Note: Three liters of the liquid is not enough for a vehicle's radiator.