SOLUTION: How many kg of water must be added to 50 kg of 80% acid to obtain a 60% acid?

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Question 697032: How many kg of water must be added to 50 kg of 80% acid to obtain a 60% acid?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How many kg of water must be added to 50 kg of 80% acid to obtain a 60% acid?
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Equation:
water + water = water
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0.20*50 + 1*x = 0.40(50+x)
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20*50 + 100x = 40*50 + 40x
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60x = 20*50
x = (1/3)50
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x = 16 2/3 kg (amt. of water to add)
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Cheers,
Stan H.
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