SOLUTION: If you mix 140mL of a 60% acid solution with 200 mL of a 30% solution you get a 40 mL of a ______

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Question 74584: If you mix 140mL of a 60% acid solution with 200 mL of a 30% solution you get a 40 mL of a _______% solution.
Found 2 solutions by Nate, stanbon:
Answer by Nate(3500) (Show Source):
You can put this solution on YOUR website!
140 + 200 does not equal 40 ....

or about 42.35%

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
If you mix 140mL of a 60% acid solution with 200 mL of a 30% solution you get a 40 mL of a _______% solution.
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60% solution DATA:
Amt = 140 ml ; Amt of acid = 0.6*140 = 84 ml
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30% solution DATA:
Amt = 200 ml ; Amt of acid = 0.3*200 = 60 ml
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x% solution DATA:
Amt ; 40 ml ; Amt of acid = 40x ml
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EQUATION:
acid + acid = acid
84 +60 = 40x
144 = 40x
x= a percentage greater than 100%
COMMENT: Something is not stated right in your posting.
Maybe 40 ml should be 400 ml !!!!!!!
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Cheers,
Stan H.

SOLUTION: If you mix 140mL of a 60% acid solution with 200 mL of a 30% solution you get a 40 mL of a _______% solution.