Problema Solution
Doreen is a chemist. She needs to prepare 32 ounces of a 11% hydrochloric acid solution. Find the amount of 16% solution and the amount of 8% solution she should mix to get this solution.
Answer provided by our tutors
let
x = oz of the 16% solution
y = oz of the 8% solution
She needs to prepare 32 ounces of a 11% hydrochloric acid solution
x + y = 32
0.16x + 0.08y = 0.11*32
by solving the system of equations we find
x = 12 oz
y = 20 oz
click here to see the step by step solution of the system of equations
Doreen should mix 12 ounces of the 16% solution and 20 ounces of the 8% solution.