Charlene and Gary want to make perfume. In order to get the right balance of ingredients for their tastes they bought 3 ounces o
f rose oil at $4.03 per ounce, 2 ounces of ginger essence for $3.42 per ounce, and 4 ounces of black currant essence for $3.92 per ounce. Determine the cost per ounce of the perfume. The cost per ounce of the perfume is $ (Round to the nearest cent.)
