Problema Solution
There are 500 ml of a 40% orange juice. A portion of this is to be replaced by an 80% orange juice solution to increase its sweetness and concentration to 70% orange juice. How many ml of the original solution must be replaced?
Answer provided by our tutors
Let 'x' represent the ml of the original solution 40% solution that should be replaced with 80% solution.
0.40*(500 - x) + 0.80*x = 0.70*500
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click here to see the equation solved for x
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x = 375 ml
375 ml of the original solution must be replaced.