Multiple choice

A chemist has three containers of different volumes containing liquids A, B and C, each having a different concentration of a certain compound. Container A has a solution that is 40% concentrated, Container B has a solution that is 60% concentrated, and Container C has a solution that is 80% concentrated. The chemist wants to create a new solution by mixing these three containers in such a way that the final mixture has a concentration of 70%. However, due to a laboratory accident, he can only use half the volume from Container A, two-thirds of the volume from Container B, and three-fourths of the volume from Container C. How many millilitres of each container should he use to create the desired 70% concentrated mixture?

  1. 150 ml of A, 200 ml of B, and 205.5 ml of C

  2. 100 ml of A, 110.5 ml of B, and 140 ml of C

  3. 120 ml of A, 118.5 ml of B, and 240 ml of C

  4. 100 ml of A, 112.5 ml of B, and 300 ml of C

  5. a
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D Correct answer

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