posted by Jason P on .
a chemist has a solution that is 20 percent alcohol by volume. which of the following expressions represents the percent of alcohol by volume when m litersof the solution is mixed with h liters of pure alcohol and p liters of water?
let's look at how much alcohol we have
we have .2m + h + 0.0p = .2m+h
what is the total volume ?
so the percentage is (.2m+h)/(m+h+p)(100%)
= (20m + 100h)/(m+h+p)%
I suppose e) resembles that if it had the brackets