SOLUTION: Ink remover: Etch Clean Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get 30 L of a solution that is 40% ac
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Question 531536: Ink remover: Etch Clean Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get 30 L of a solution that is 40% acid? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Ink remover: Etch Clean Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get 30 L of a solution that is 40% acid?
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Equation:
acid + acid = acid
0.25x + 0.50(30-x) = 0.4*30
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Multiply thru by 100 to get:
25x + 50*30 - 50x = 40*30
-25x = -10*30
x = (2/5)30
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x = 12 L (amt. of 25% solution needed)
30 - x = 18 L (amt. of 50% solution needed)
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Cheers,
Stan H.
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