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Larry mixed 15 grams of salt with 210 grams of a 5% salt solution in water. What is the percent of salt in his new solution?
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Larry mixed 15 grams of salt with 210 grams of a 5% salt solution in water. What is the percent of salt in his new solution?

User Neil Brown
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total mass of salt in the 2100 grams of solution = 15 + 0.05 * 210 = 25.5 grams

as a percent this is (25.5 * 100) / 210 = 12.14% Answer
User Ery
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