The question is from CAT Percentages. This question is a combination of two topics: Percentages and Mixtures. 2IIMs CAT question bank provides you with CAT questions that can help you gear for CAT Exam CAT 2019. Percentages is an important topic for CAT. This question is about mixing two alloys in a ratio to create a new alloy which contains three metals.
Question 3: An alloy of copper and aluminum has 40% copper. An alloy of Copper and Zinc has Copper and Zinc in the ratio 2: 7. These two alloys are mixed in such a way that in the overall alloy, there is more aluminum than Zinc, and copper constitutes x% of this alloy. What is the range of values x can take?
Alloy 1 | Copper | Aluminium |
2x | 3x | |
Alloy 2 | Copper | Zinc |
2y | 7y |
Alloy 1 | Copper | Aluminium |
14 | 21 | |
Alloy 2 | Copper | Zinc |
6 | 21 |
The question is "What is the range of values x can take?"
x could range from 32.25% to 40%
Choice D is the correct answer.
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