Question

how many liters of water should be added to 18 liters of a 15% bleach solution so that the resulting solution contains only 10% bleach?

Answer 1

7.2 liters of water must be added to create a 10% bleach solution.

Explanation:

18 liters times 14%, or 18 * 0.14, is 2.52. If we want bleach to be 10% of our solution, we can just multiply this number by 10 because 10% times 10 is 100%!! 2.52 * 10 is 25.2. To find how many liters of water you need to add you just find the difference. To do this you subtract your original from your new solution, so 25.2 - 18 = 7.2 liters of water need to be added.

Explanation: