Your car radiator can hold 20 liters of fluid. Many automotive stores sell jugs of pure antifreeze, but some also sell jugs of

Question

Your car radiator can hold 20 liters of fluid. Many automotive stores sell jugs of pure antifreeze, but some also sell jugs of antifreeze that have been premixed with water. Suppose you buy a jug of 30% antifreeze mixture as well as a jug of pure antifreeze. How many liters of each jug must you use to make enough of a 89.5% mixture to fill your radiator?

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