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A scientist has \(400\) units of a \(6\%\) phosphoric acid solution, and an unlimited supply of \(12\%\) phosphoric

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A scientist has \(400\) units of a \(6\%\) phosphoric acid solution, and an unlimited supply of \(12\%\) phosphoric

by AAPL » Fri Nov 24, 2023 6:22 pm

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A scientist has \(400\) units of a \(6\%\) phosphoric acid solution, and an unlimited supply of \(12\%\) phosphoric acid solution. How many units of the latter must she add to the former to produce a \(10\%\) phosphoric acid solution?

A. \(200\)
B. \(400\)
C. \(500\)
D. \(600\)
E. \(800\)

OA E
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