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Mathematics, 10.06.2021 02:50 ella3714
A student has a 2% salt water solution and a 7% salt water solution. To best imitate salt water at a local beach, he needs 1 liter of a 3.5% salt water solution. He defines x as the amount of 2% solution and writes this equation:
0.2x + 0.7(x – 1) = 0.35(1)
He solves the equation and determines that x is about 1.17 liters. He interprets this as needing 1.17 liters of 2% solution to make 1 liter of 3.5% solution.
What errors did the student make? Check all that apply.
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A student has a 2% salt water solution and a 7% salt water solution. To best imitate salt water at a...
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