SOLUTION: System of equations:
A laboratory assistant is asked to mix 30% alcohol solution with 21 liters of an 80% alcohol solutuion to make a 60% alcohol solution. How many liters of th
Question 226451: System of equations:
A laboratory assistant is asked to mix 30% alcohol solution with 21 liters of an 80% alcohol solutuion to make a 60% alcohol solution. How many liters of the the 30% alcohol solution should be used. Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = liters of 30% solution to be used
In words:
(liters of alcohol I end up with)/(total liters at end) = 60%
given:
I am adding liters of alcohol to solution
The solution already contains liters alcohol
I can now write the equation
14 liters of the 30% solution must be added
check:
OK
