SOLUTION: A radiator contains 5 quarts of fluid, 30% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 35% antifreeze?
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Question 910877: A radiator contains 5 quarts of fluid, 30% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 35% antifreeze? Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! 0.3*5-0.3x+1x=0.35(5)
1.5+0.7x=1.75
0.7x=1.75-1.5
0.7x=0.25
x=0.35714286
check
0.3*4.64285714+1*0.35714286=0.35(5)
1.39285714+0.35714286=1.75
1.75=1.75
ok
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