Problema Solution
In the lab, Rita has two solutions that contain alcohol and is mixing them with each other. Solution A is 50% alcohol and solution B is 10% alcohol. Shes uses 1200 millimeters of solution A. How many millimeters of solution B does she use, if the resulting mixture is a 40% alcohol solution?
Answer provided by our tutors
First, we will assume that the units are meant to be in millileters and we will let 'n' stand for the number of millileters of solution B used. We can write:
1200(.5)+n(.1)=(1200+n).4
Using Algebrator to solve for 'n', we get:
n=400 ml