Find the millileters of 10% solution and millileters of 40% solution.

Question

Joy needs to mix a 10% saline solution with a 40% saline solution to create 200 millileters of a 22% solution. How many millileters of each solution must Joy use?

Answer 1

0.10x + 0.40(200-x) = 0.22(200)

0.10x + 80 - 0.40x = 44

-0.30x = -36

x = 120 answer: 120ml of the 10% solution and 80ml of the 40% solution