How Much of a 6% Solution and a 11% Solution

Multiple Choice

How much of a 6% solution and a 11% solution would you use to make 250 mL of a 8%-electrolyte solution?

A) 130 mL of the 11% solution,
120 mL of the 6% solution.
B) 90 mL of the 11% solution,
160 mL of the 6% solution.
C) 100 mL of the 11% solution,
150 mL of the 6% solution.
D) 85 mL of the 11% solution,
165 mL of the 6% solution.
E) 150 mL of the 11% solution,
100 mL of the 6% solution.