Mixture problem, system of equations. PLEASE HELP

Question

When solving systems of we have at least two unknowns. A common example of a system of equations is a mixture problem. If I know that the solution I use to clean my car windows is 65% water and 35% cleaner, I have one relationship. If I also know that I only have a 3-liter spray bottle that gives me a second relationship.

1. What do the unknowns in this system represent and what are the two equations that that need to be solved?
2. Finally, solve the system of equations.

Answer 1

.35 of the solution is cleaner

total volume of solution is 3 L

.35(3) = 1.05 L cleaner

1.95 L of water

cleaner + water = 3L