SOLUTION: i dont get how to set the problem up. once i get the problem set up, i can do it. please help? Your chemistry teacher asks you to mix 20% acid solution with 50% acid solution to

Question 26777: i dont get how to set the problem up. once i get the problem set up, i can do it. please help?
Your chemistry teacher asks you to mix 20% acid solution with 50% acid solution to obtain 12 ounces of 30% acid solution. how much of each must you use?
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
20x+50(12-x)=30(12)
20x+600-50x=360
-30x=-240
x=8

12-8=4

Hence, for 20% there should be 8 ounces added and for 50% there should be 4 ounces added.
Paul.
RELATED QUESTIONS
i dont get how to set the problem up. once i get the problem set up, i can do it. using... (answered by bmauger)

the sum of two numbers is 12. their product is 32. find the numbers. not good at word... (answered by jim_thompson5910,PRMath)

The square of an integer is equal to twice the integer. Find the integer. I am havin a (answered by scott8148)

i neeed hellpp !! the problem iss f(x)=3over2x+6 when x=2 i dont understand how to... (answered by stanbon)

I dont get how to set up the equation to solve (answered by lenny460)

Y=2/3x and Y=-2/7x+4/7 I am not even sure how to set this up. Do I need to have the... (answered by phillv)

I am having a problem with getting to the final answer. I seem to have the set up... (answered by jim_thompson5910)

I am trying to solve a percent proportion. I am not sure how to set up the problem when... (answered by josgarithmetic)

I really need help setting up the equation to solve the following problem more than... (answered by stanbon)