Free Practice Question
PS · Problem Solving
sub-505
Mixture
A mixture containing 25% salt is combined with another mixture that has 35% salt to create a total of 12 kilograms of 30% salt mixture. How many kilograms of the 35% mixture are included?
Answer Choices
Correct answer marked belowA
1
B
2
C
3
D
4
6
Correct
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Explanation
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Official Explanation
Official
To find the average concentration, we use the formula: Average Concentration = (C1Q1 + C2Q2) / (Q1 + Q2). The total weight is 12 kg. Let the amount of the 35% mixture be b, then the amount of the 25% mixture is 12 -…
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Comments
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A
AishwaryaJun 17, 2024
thank you taking time to upload it!
S
SahajmeetJan 8, 2024
appreciated!
What this question tests
What it tests
Your ability to reason about weighted averages and the composition of mixtures.
Common trap
Averaging the percentages of two solutions without weighting by their volumes.
Details
Difficulty
sub-505
Type
PS
Category