Math help (dealing with %s and alcohol solutions)?

Question by ? яιкι ¿: Math help (dealing with %s and alcohol solutions)?
” A lab technician wants to make 50ml of a 20% alcohol solution. She has solutions that are 15% and 30% alcohol. How much of each must she use? ”

How to set this sort of problem up and solve?

Best answer:

Answer by Hannah M
33 1/3 of the 15% solution and 16 2/3 of the 30% solution.

i would just like to add that it is pretty pathetic that i do math problems for fun at 1 in the morning…

Add your own answer in the comments!