Question

A chemist wants to dilute a 30% phosphoric acid solution to a 15% solution. He needs 10 liters of the 15% solution. How many liters of the 30% solution and water must the chemist use?

Answer 1

30% solution x liters

30%(water) 10-x liters

15% 10 liters

Explanation:

Answer 2

The chemist needs to use 5 liters of the 30% solution and 5 liters of water.