Free Practice Question
PS · Problem Solving
605-655
Mixture
A certain fraction of a 15% salt solution by weight was replaced by a 25% salt solution by weight. The resulting solution has 21 % salt by weight. What fraction of the original solution was replaced?
Answer Choices
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1/2
B
3/5
C
2/3
D
7/10
E
3/4
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Explanation
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Difficulty
605-655
Type
PS
Category