SOLUTION: A 3 gallon 20% alcohol water mixture is to be upgraded by adding to it a certain amount of 70% alcohol water mixture. How many gallons of the 70% must be added to make new enriched
Algebra.Com
Question 722111: A 3 gallon 20% alcohol water mixture is to be upgraded by adding to it a certain amount of 70% alcohol water mixture. How many gallons of the 70% must be added to make new enriched mixture of a 40% alcohol water mix?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
--- percent ---------------- Amount
Alcool I 20 ---------------- 3 gal
Alcohol II 70 ---------------- x gal
Mixture 40 ---------------- 3 + x gal
20 * 3 + 70 x = 40 ( 3 + x )
60 + 70 x = 120 + 40 x
70 x -40 x = -60 + 120
30 x = 60
/ 30
x = 2 gal Alcohol II
m.ananth@hotmail.ca
RELATED QUESTIONS
how much water needs to be added to 3 quarts of 96% alcohol to produce a mixture that is... (answered by richwmiller)
how much water needs to be added to 3 quarts of 96% alcohol to produce a mixture that is... (answered by richwmiller)
how much water needs to be added to 3 quarts of 96% alcohol to produce a mixture that is... (answered by richwmiller)
A 50 gallon of mixture contains 20% alcohol and 80%orange juice,how much pure alcohol... (answered by josmiceli)
A mixture contains alcohol and water in the ratio of 12:5. On adding 14litres of water,... (answered by josgarithmetic,MathTherapy)
A mixture contains alcohol and water in the ratio of 12:5. On adding 14 litres of water,... (answered by josgarithmetic)
How many liters of water must be mixed with 20 liters of a 90% alcohol mixture so that... (answered by mananth)
A mixture contains alcohol and water in the ratio of 12:5, on adding 14 litres of wate,... (answered by josgarithmetic,josmiceli)
A pharmacist has 6L of a mixture that is 20% alcohol. How much pure alcohol must be added (answered by ankor@dixie-net.com)