ACT Math Practice Question #1444 (Medium (32)) | Test Citadel
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ACT Math Difficulty: Medium (32)

Digital ACT Math Practice Question #1444

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How many liters of a 10% saline solution must be mixed with 30 liters of a 50% saline solution to create a 35% saline solution?
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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.

Masterclass Solution & Distractor Trap Analysis

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....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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