Question

2. A chemist wants to make 4 liters of a 7% acid solution by mixing a 10% acid solution and a 4% acid solution. How many liters of each solution should the chemist use? Write your answer as a complete sentence Be sure to:
(a) Define your variable and expressions for the quantities.
(b) Write an equation that models the problem.
(c) Solve the equation.
(d) State the answer in a complete sentence

Answer 1

let the volume of 10% acid be x liters. The volume of 4% will then be 4 - x liters.

so we have 0.10x + 0.04(4 - x) = 0.07*4

solve this for x

Answer 2

thanks

Answer 3

yw