A Hospital Has a 4%-Saline Solution and an 12%-Saline Solution

question 1

Multiple Choice

A hospital has a 4%-saline solution and an 12%-saline solution on hand. How much of each should be used to prepare 640 cm ³ of 7%-saline solution?

• A) 240 cm ³ of a 12%-saline solution,
• 400 cm ³ of a 4%-saline solution.
• B) 220 cm ³ of a 12%-saline solution,
• 420 cm ³ of a 4%-saline solution.
• C) 400 cm ³ of a 12%-saline solution,
• 240 cm ³ of a 4%-saline solution.
• D) 340 cm ³ of a 12%-saline solution,
• 300 cm ³ of a 4%-saline solution.
• E) 440 cm ³ of a 12%-saline solution,
• 200 cm ³ of a 4%-saline solution.

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