At a city water purification plant, water is mixed with a release agent in a ratio of 8: 1. you are using 32 ounces of water. how many ounces of the release agent should you mix with the water?

We have been given that at a city water purification plant, water is mixed with a release agent in a ratio of 8:1.

Let x be amount of release agent that should be mixed with the 32 ounces of water. We can write an equation by our given information as:

Upon cross multiplication we will get,

Therefore, we should mix 4 ounces of the release agent to 32 ounces of water.

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb