znjsmom Posts: 1, Reputation: 1 New Member #1 Sep 19, 2007, 02:39 PM
Percentage calculation
Have a calculation question...

How many liters of 2% brind solution must be added to 30 liters of 10% brind solution to dilute it to a 8% solution.

Do not just want the answer, would like formula to solve...
 galactus Posts: 2,271, Reputation: 282 Ultra Member #2 Sep 19, 2007, 02:47 PM
x=amount of 2% solution.

$0.02x+0.10(30)=0.08(\underbrace{30+x}_{\text{added to 30}})$

Solve for x.

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