SOLUTION: A saline solution is 20% salt. How many gallons of water must be added to dilute the mixture to 8 gals of a 15% saline solution?
Algebra.Com
Question 466640: A saline solution is 20% salt. How many gallons of water must be added to dilute the mixture to 8 gals of a 15% saline solution?
Found 2 solutions by lwsshak3, solver91311:
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
A saline solution is 20% salt. How many gallons of water must be added to dilute the mixture to 8 gals of a 15% saline solution.
...
let x=gal. of water to be added
8-x =gal. of 20% solution
..
20%(8-x)=15%(8)
1.6-.2x=1.2
.2x=.4
x=2
ans:
2 gallons of water must be added to dilute the mixture to 8 gals of a 15% saline solution.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Let 
represent the amount of water added to the original 20% solution to make it 8 gallons. Then the amount of 20% solution must be 
. Twenty percent of the 20% solution is salt. Fifteen percent of the 8 gallons at the end is salt, and since we added pure water, the salt at the beginning must be the same as the salt at the end.
\ =\ 0.15(8))
Solve for
John
My calculator said it, I believe it, that settles it
RELATED QUESTIONS
A saline solution is 20% salt. How many gallons of water must be added to dilute the... (answered by ewatrrr)
how many quarts of a 20% saline solution must be added to 8 quarts of a 15% solution to... (answered by Paul)
Hi
There is 500g of a 10% salt solution. If water is added to dilute this saline... (answered by ankor@dixie-net.com)
how much of a 50% saline solution must be added to 100ml of 20% saline solution to make a (answered by stanbon)
how many liters of a 3%saline solution must be added to an 8% saline solution to obtain... (answered by nerdybill)
How many liters of a 3% saline solution must be added to an 8% saline solution to obtain (answered by josgarithmetic)
How many liters of 3% saline solution must be added to an 8% saline solution to obtain 20 (answered by josgarithmetic)
A flask contains 120 ml of saline solution whose salt concentration is 8%. How many ml of (answered by josgarithmetic)
please help me solve this problem
how many ounces of pure water must be added to 5o... (answered by jim_thompson5910)
