SOLUTION: how many liters of a 40% solution of acid must be combined with 15% solution to obtain 30 liters of a 20 solution? i want to see how to form the eqations

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Question 456792: how many liters of a 40% solution of acid must be combined with 15% solution to obtain 30 liters of a 20 solution? i want to see how to form the eqations
Answer by stanbon(57352) About Me  (Show Source):
You can put this solution on YOUR website!
how many liters of a 40% solution of acid must be combined with 15% solution to obtain 30 liters of a 20% solution? i want to see how to form the equations
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Equation:
acid + acid = acid
0.40x + 0.14(30-x) = 0.20*30
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Cheers,
Stan H.