A chemist has two large containers of sulfuric acid solution, with different concentrations of acid in each container. Blending
310 mL of the first solution and 590 mL of the second gives a mixture that is 11.58% acid, whereas blending 85 mL of the first mixed with 490 mL of the second gives a 7.25% acid mixture. What are the concentrations of sulfuric acid in the original containers?
