Problema Solution
A chemist wishes to make 3 liters of a 7% acid solution by mixing a 9% acid solution and a 4% acid solution. How many liters of each solution should the chemist use?
Answer provided by our tutors
let
x = the liters of a 9% acid solution used
y = the liters of a 4% acid solution used
chemist wishes to make 3 liters of a 7% acid solution
x + y = 3
0.09x + 0.04y = 0.07*3
by solving the above system of equations we find
x = 1.8 l
y = 1.2 l
click here to see the step by step solution of the system of equations
1.8 l of the 9% acid solution should be mixed with 1.2 l of the 4% acid solution.