SOLUTION: how much liter of alcohol is added to a 4-liter 50% solution to make 70% solution?
Algebra.Com
Question 320654: how much liter of alcohol is added to a 4-liter 50% solution to make 70% solution?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
pure alcohol x liters
50%solution 4 liters
70% solution x+4 liters
..
x+0.5x=0.7(x+4)
1.5x= 0.7x+2.8
0.8x=2.8
x=2.8/0.8
x=3.5 liters of pure alcohol
RELATED QUESTIONS
How many liters of pure alcohol must be added to a 4-liter 50% solution to make 70%... (answered by josgarithmetic)
how much alcohol should be added to 1 liter of a 30% alcohol solution to get a 50%... (answered by richwmiller)
how many of 35% alcohol must be mixed with 50% to make 2.5 liter of a 70% alcohol... (answered by mananth)
you have a 40 liter solution that is 90% alcohol. How many liters of water must be added... (answered by josgarithmetic)
how many liter of 20% solution and 70% solution do you need to make 20 liter of a 35%... (answered by psbhowmick)
How much of a 45% solution must be added to 1 liter of a 60% solution in order to make a... (answered by tommyt3rd)
Please help me solve the following: a 12 liter antifreeze solution is made up of water... (answered by lwsshak3)
A liter of fluid is 50% alcohol. How much water must be added to dilute it to a 20%... (answered by orca)
A chemist has one liter of a solution that is 90% acid. How much water must be added to... (answered by stanbon)