SOLUTION: I am HORRIBLE with percents, so if you can please help, please and thanks! Thirty-three pints of acid solution contain 3 pints of pure acid. Find the number of pints of pure ac

Question 410834: I am HORRIBLE with percents, so if you can please help, please and thanks!
Thirty-three pints of acid solution contain 3 pints of pure acid. Find the number of pints of pure acid that must be added to the 33 pints so that the resulting solution is 25% pure acid.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Thirty-three pints of acid solution contain 3 pints of pure acid. Find the number of pints of pure acid that must be added to the 33 pints so that the resulting solution is 25% pure acid.
-----
Equation:
acid + acid = acid
3 + x = 0.25(33+x)
----
Multiply thru by 100 to get:
300 + 100x = 25*33 + 25x
75x = 525
x = 11 pints (amt. of pure acid needed)
===============
Cheers,
Stan H.
==========
RELATED QUESTIONS
Estimate the amount in the problem. What is 48.3% of 1,500? I am so bad with percents... (answered by checkley71,GKelly)

I am horrible with absolute value and also imaginary numbers. Could you please help me... (answered by jim_thompson5910)

I had this mixture problem on a quiz and its really hard. If i'd pulled out 10 hairs for... (answered by nerdybill)

I am in pre-agebra. Right now we are working on estimating with percents. My teacher... (answered by checkley77)

S(with a sideways 8 beside it)=8-2+1/2+...=? Please help! I am so horrible at... (answered by fractalier)

Hi, I have a problem here, I am horrible with math so please go easy on me. I don't even... (answered by MathLover1,ikleyn,MathTherapy)

If 7 more than 3x a number is added to a diffrence of 5x a number and 10 the resust is 3o (answered by stanbon)

Please help i am so confused and i keep coming up with these horrible fractions. this is... (answered by Edwin McCravy,ankor@dixie-net.com)

Megan factored the expression 18x^2+17x-15 as (2x-3)(9x+5). But when Jacob applied the... (answered by ReadingBoosters)