Question

Jin adds 1 gallon of a water-and-bleach mixture that is 4% bleach to 2 gallons of a

water-and-bleach mixture that is 10% bleach. What percent of the final mixture is bleach?

Answer 1

14%

Explanation:

1 gallon + 2 gallons = 3 gallons

1/3 of this is 4% bleach, while 2/3 is 10% bleach, together 3/3 is 14% bleach.