SOLUTION: A nurse has a solution that is 25% alcohol and another that is 50% alcohol. How much of each must he use to make 45 liters of a solution that is 40% alcohol?
Algebra.Com
Question 758194: A nurse has a solution that is 25% alcohol and another that is 50% alcohol. How much of each must he use to make 45 liters of a solution that is 40% alcohol?
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A nurse has a solution that is 25% alcohol and another that is 50% alcohol. How much of each must he use to make 45 liters of a solution that is 40% alcohol?
------
Equation:
alch + alch = alch
0.25x + 0.50(45-x) = 0.40*45
----------
25x + 50*45 - 50x = 40*45
-----
-25x = -10*45
-----
x = 18 liters (amt. of 25% solution needed)
45-x = 27 liters (amt. of 50% solution needed)
==============================
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A nurse has a solution that is 25% alcohol and another that is 50% alcohol. How much of each must he use to make 45 liters of a solution that is 40% alcohol?
------------
t = amount of 25%
f = amount of 50%
-----
t + f = 45
25t + 50f = 45*40
RELATED QUESTIONS
A nurse has a solution that is 25% alcohol and another that is 50% alcohol. How much if... (answered by stanbon)
nurse has a solution that is 25% alcohol and another that is 50% alcohol. how much of... (answered by ptaylor)
Use two equations in two variables to solve the application.
A nurse has a solution... (answered by Alan3354)
A chemist has one solution that is 25% alcohol and another that is 75% alcohol. How much... (answered by nerdybill,NSL1226)
A nurse has 1 liter of a solution that is 10% alcohol. How much pure alcohol must she add (answered by josmiceli)
A nurse has 1 liter of a solution that is 20% alcohol. How much pure alcohol must she add (answered by Alan3354)
A chemist has one solution that is 60% alcohol and another that is 35% alcohol. How much... (answered by stanbon)
A chemist has one solution that is 40% alcohol and another that is 55% alcohol. How much... (answered by dabanfield)
A nurse has 1 liter of a solution that is 20% alcohol. How much pure alchol must she add... (answered by stanbon)