High School

How many teaspoons of a 45% solution must be added to a 60% solution to obtain a mixture that is 60% solution?

A. 0 teaspoons
B. 2 teaspoons
C. 3 teaspoons
D. 4 teaspoons

Answer :

Final answer:

To determine the teaspoons of a 45% solution needed, set up an equation using the given concentrations, resulting in the answer being 3 teaspoons. the correct answer is C

Explanation:

To find the number of teaspoons needed:

  1. Let x be the volume of the 45% solution in teaspoons.
  2. Set up the equation: 0.45x + 0.6(2 - x) = 0.6*2.
  3. Solve for x, the answer is Option C) 3 teaspoons.

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