SOLUTION: How many liters of a 10% alcohol solution must be added to 80 liters of a 30% alcohol solution to obtain a 15% alcohol solution? Please Help!!!

Question 14307: How many liters of a 10% alcohol solution must be added to 80 liters of a 30% alcohol solution to obtain a 15% alcohol solution? Please Help!!!
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
You can write the equation to solve this problem like this:
(10%)x liters + (30%)80 liters = (15%)(x+80)liters. Change the percents to decimals.
Simplify and solve for x.
Subtract 12 from both sides.
Subtract 0.1x from both sides.
Finally, divide both sides by 0.05

240 liters of 10% alcohol solution must be added to the 80 liters of the 30% alcohol solution to obtain 320 liters of 15% alcohol solution.
RELATED QUESTIONS
How many liters of a 20% alcohol should be added to an 80% alcohol solution to obtain 15... (answered by Alan3354)

How many liters of a 20% alcohol should be added to an 80% alcohol solution to obtain 15... (answered by stanbon)

Moonshine has 50 liters of a 70% alcohol solution. How many liters of pure alcohol must... (answered by mathie123)

How many liters of a 10% alcohol solution must be added with 110 liters of 3% alcohol... (answered by josgarithmetic)

How many liters of pure alcohol must be added to 10 liters of a 30% solution to obtain an (answered by josgarithmetic)

how many liters of pure alcohol must be added to 15 liters of 20% solution to obtain a... (answered by Maths68)

How many liters of pure alcohol must be added to 15 liters of 20% solution to obtain a... (answered by ikleyn)

How many liters of a 40% alcohol solution should be added to 40 liters of a 10% alcohol... (answered by stanbon,galactus)

How many liters of a 70% alcohol solution must be mixed with 30 liters of a 15% alcohol... (answered by Earlsdon)