SOLUTION: How much 20%for solution needs to be added to 60% solution to make 400ml of a 40% solution?
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Question 520456: How much 20%for solution needs to be added to 60% solution to make 400ml of a 40% solution?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How much 20%for solution needs to be added to 60% solution to make 400ml of a 40% solution?
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Equation:
active + active = active
0.20x + 0.60(400-x) = 0.40*400
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Multiply thru by 100:
20x + 60*400 - 60x = 40*400
-40x = -20*400
x = 200 ml (amt. of 20% solution needed)
400-x = 200 ml (amt. of 60% solution needed)
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Cheers,
Stan H.
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