if a mixture is 1 ⁄ 7 alcohol by volume and 2 ⁄ 7 water by volume , what is the ratio of the volume of alcohol to the volume of water in this mixture ?
"should be a sub - 600 level q . . volume = { 1 / 7 } / { 2 / 7 } = 1 / 2 c"
divide(divide(1, 7), divide(2, 7))