# SOLUTION: eighty liters of a 40% antifreeze solution had to be strengthened so it contained 52% antifreeze. how much should be added?

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 Click here to see ALL problems on Mixture Word Problems Question 147618: eighty liters of a 40% antifreeze solution had to be strengthened so it contained 52% antifreeze. how much should be added?Answer by Nate(3500)   (Show Source): You can put this solution on YOUR website!I'm guessing you are adding 100% or pure antifreeze. ( 80 * 40% + x * 100% ) / ( 80 + x ) = 52% ( 32 + x ) / ( 80 + x ) = 0.52 32 + x = 0.52( 80 + x ) 32 + x = 41.6 + 0.52x 0.48x = 9.6 x = 20 Litres of antifreeze