SOLUTION: A chemist has 6L of 50 % acid solution. how much water to be added to obtain 20% acid solution?

Question 299119: A chemist has 6L of 50 % acid solution. how much water to be added to obtain 20% acid solution?
Found 2 solutions by checkley77, Alan3354:
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
.50*6=.20(6+x)
3=1.2+.2x
.2x=3-1.2
.2x=1.8.
x=1.8/.2
x=9 Liters of water is needed.
Proof:
.50*6=.20(6+9)
3=.2*15
3=3
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The 6 liters of 50% is 3 liters of acid and 3 liters of water.
To make it a 20% mix, water will be the other 80%.
3 liters of acid = 20%
12 liters of water = 80%
12 - 3 = 9 liters of water to be added.

RELATED QUESTIONS
a chemist has 6 liters of a 50% acid solution. how much water must be added to obtain a... (answered by stanbon)
a chemist has 6 liters of a 50% acid solution. how much water must be added to obtain a... (answered by ankor@dixie-net.com)
A chemist has 2.5 liters of a solution which is 70% acid. How much water should be added... (answered by venugopalramana)
A chemist needs to have a 70% acid solution. He has 5 gallons of a 90% acid solution. How (answered by stanbon)
A chemist needs to have a 70% acid solution. He has 5 gallons of a 90% acid solution. How (answered by Alan3354,stanbon)
How much water must be added to 6 ounces of a 20% acid solution to obtain a 15% acid... (answered by ankor@dixie-net.com)
How much water must be added to 6 ounces of a 20% acid solution to obtain a 15% acid... (answered by josgarithmetic)
A chemist has 40mL of solution that is 50% acid. How much water should be added to make... (answered by bmauger)
a chemist has 200ml of a 52% acid solution. How much pure acid must be added to obtain... (answered by josgarithmetic)