Question

There is a beaker of 3.5% acid solution and a beaker of 6% acid solution in the science lab. Mr. Larson needs 200 milliliters of a 4.5% acid solution for an experiment. How many milliliters of each solution should he combine?

A. 80 mL of the 3.5% solution and 120 mL of the 6% solution

B. 120 mL of the 3.5% solution and 80 mL of the 6% solution

C. 140 mL of the 3.5% solution and 60 mL of the 6% solution

D. 120 mL of the 3.5% solution and 80 mL of the 6% solution