Digital ACT Math Practice Question #1444
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Distance to 35%: from 10% is 25%, from 50% is 15%. Ratio = 15/25 = 3/5. 30 * (3/5) = 18 liters.
Let x be liters of 10% solution. Saline equation: 0.10x + 0.50(30) = 0.35(x + 30). 0.10x + 15 = 0.35x + 10.5. 4.5 = 0.25x -> x = 4.5 / 0.25 = 18 liters....
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