Example 5.2.11 Mixing Solutions with Two Different Concentrations

LaVonda is a meticulous bartender and she needs to serve \(600\) milliliters of Rob Roy, an alcoholic cocktail that is \(34\%\) alcohol by volume. The main ingredients are scotch that is \(42\%\) alcohol and vermouth that is \(18\%\) alcohol. How many milliliters of each ingredient should she mix together to make the concentration she needs?