#"1 oz = 25.3 g"#, so you want to make 25.3 g of solution.
The mass of each component will be
#25.3 color(red)(cancel(color(black)("g solution"))) × "55 g alcohol"/(100 color(red)(cancel(color(black)("g solution")))) = "13.9 g alcohol"#
#25.3 color(red)(cancel(color(black)("g solution"))) × "44 g water"/(100 color(red)(cancel(color(black)("g solution")))) = "11.1 g water"#
#25.3 color(red)(cancel(color(black)("g solution"))) × "1 g NaCl"/(100 color(red)(cancel(color(black)("g solution")))) = "0.25 g NaCl"#
The density of ethanol is #"0.789 g/mL"#.
∴ The volume of ethanol is
#13.9 color(red)(cancel(color(black)("g ethanol"))) × 1 "mL ethanol"/(0.789 color(red)(cancel(color(black)("mL ethanol")))) = "17.6 mL ethanol"#
The density of water is #"0.998 g/mL"#.
∴ The volume of water is
#11.1 color(red)(cancel(color(black)("g water"))) × "1 mL water"/(0.998 color(red)(cancel(color(black)("g water")))) = "11.1 mL water"#.
To make the solution, you need #"17.6 mL ethanol, 11.1 mL water"#, and #"0.25 g NaCl"#.
