The tooth cure didn't work (see practice problem e). On the bright side, Mrs. Gargantua thinks a slightly altered version
of the same medicine might very well clear up her gooey
scalp. So now she is mixing a liquid containing 12% reactor
fuel with a liquid containing 32% reactor fuel to create a 4
ounce liquid containing 20% reactor fuel. How many ounces
of the 12% liquid must she use? Round your answer to the
nearest one decimal place (tenths).