# SOLUTION: Angela needs 20 quarts of 50% antifreeze in her radiator. She plans to obtain this by mixing some pure antifreeze (100%) with an appropriate amount of a 40% antifreeze solution. Ho

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Angela needs 20 quarts of 50% antifreeze in her radiator. She plans to obtain this by mixing some pure antifreeze (100%) with an appropriate amount of a 40% antifreeze solution. Ho      Log On

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 Click here to see ALL problems on Mixture Word Problems Question 24050: Angela needs 20 quarts of 50% antifreeze in her radiator. She plans to obtain this by mixing some pure antifreeze (100%) with an appropriate amount of a 40% antifreeze solution. How many quarts of each should she use?Answer by Earlsdon(6294)   (Show Source): You can put this solution on YOUR website!You can set up the appropriate equation for this situation from the problem description. Let x = the required number of quarts of pure (100%) antifreze, then (20-x) = the required number of quarts of 40% antifreeze solution which, when added together, will give 20 quarts of 50% antifreeze solution. Change the percentages to their decimal equivalents. The equation is: Simplify and solve for x. Subtract 8 from both sides of the equation. Divide both sides by 0.6 = 3 1/3 x = 3 1/3 quarts of pure antifreeze. 20-x = 16 2/3 quarts of 40% antifreeze.