Problema Solution
A chemist needs 90 milliliters of a 25% solution but only 21% and 39% solutions available. Find how many milliliters of each that should be mixed to get the desired solution
Answer provided by our tutors
let
x = ml of the 21% solution
y = ml of the 39% solution
x + y = 90
0.21x + 0.39y = 0.25*90
by solving the above system of equations we find
x = 70 ml
y = 20 ml
click here to see the step by step solution of the system of equations
70 ml of the 25% solution should be mixed with 20 ml of the 39% solution.