SOLUTION: An automobile radiator holds four gallons and contains 25% antifreeze. How much of the solution must be drained from the radiator and antifreeze added to make the solution test 35%
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Question 676363: An automobile radiator holds four gallons and contains 25% antifreeze. How much of the solution must be drained from the radiator and antifreeze added to make the solution test 35% antifreeze? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! An automobile radiator holds four gallons and contains 25% antifreeze. How much of the solution must be drained from the radiator and antifreeze added to make the solution test 35% antifreeze?
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Equation:
anti - anti + anti = anti
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0.25*4 - 0.25*x + 1.00x = 0.35*4
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25*4 - 25x + 100x = 35*4
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75x = 40
x = 8/15 gallon (amt. of pure antifreeze to add)
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Cheers,
Stan H.
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