(Rate Problems & Mixture Problems) help!!!!

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kayla

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Nov 21, 2012
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A chemist needs 45 liters of 35% acid solution.
She has containers of 20% solution and 75% solution.
She needs to combine liters of 20% solution and liters of 75% solution to have 45 liters of 35% acid solution.
Round each value to one decimal place.

Does anyone know how to do this problem and do you know the answer?
 
Last edited:
kayla said:
A chemist needs 45 liters of 35% acid solution.
She has containers of 20% solution and 75% solution.
She needs to combine liters of 20% solution and liters of 75% solution to have 45 liters of 35% acid solution.
Round each value to one decimal place.
Click to expand...

You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...217#post322217

We can help - we only help after you have shown your work - or ask a specific question (not a statement like "Don't know any of these")

Define your "unknowns" as your variable and assign variable names.

Let

liters of 20% solution = T

liters of 75% solution = S

Now continue.....

Please share your work with us indicating exactly where you are stuck - so that we may know where to begin to help you.
 
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