SOLUTION: a manufactu have 600l of 12% acid solution how many liters of 30% solution must be added to it so that acid content in the resulting mixture will be maximum then 15% nd less then 1

Question 1015387: a manufactu have 600l of 12% acid solution how many liters of 30% solution must be added to it so that acid content in the resulting mixture will be maximum then 15% nd less then 18%
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
If you mean, LITERS, then use an abbreviation that cannot be misunderstood, like either L or the word, "liters".

Make a formula to use starting if possible, with all symbols, because you will compute twice - you want a range of values for how much of the 30% acid to use.

T, the target resulting value from 15% to 18% acid
v, how much of the 30% acid to use
You could choose to use only those as the variables.

Solve for v.

What is v for T=15?
What is v for T=18?
Those are the boundaries for v.
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