How many cups of pure water should be mixed with 9.5 cups of a 40% acid solution to dilate it into a 4% acid solution

(8.5(0.9))/(8.5 + x) = 1/25

191.25 = 8.5 + x => x = 182.75 cups

Step-by-step explanation:

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p