Mixed 300 g of 60% sulfuric acid solution and 200 g of 80% sulfuric acid solution.

Mixed 300 g of 60% sulfuric acid solution and 200 g of 80% sulfuric acid solution. What percentage of sulfuric acid is in the resulting solution.

The percentage in solutions indicates the content of sulfuric acid in them. If we have a solution of 60% sulfuric acid with a volume of 300 g, then the acid content is:
1) 300 * 60% = 180 gr.
And in a 200 gram 80% solution, the sulfuric acid content will be:
2) 200 * 80% = 160 gr.
It turns out that if we add a solution of 200 g to a solution of 300 g, then the total amount will be:
3) 300 + 200 = 500 gr.
And sulfuric acid will be there:
4) 160 + 180 = 340 gr.
What is :
5) 340/500 * 100% = 68%.
Answer: The new solution will contain 68% sulfuric acid.