JIPMAT 2025 (QA) - The ratios of copper to zinc in alloys A and B are 3:4 and 5:9, respectively. If A and B are taken in ratio 2:3 and melted to form new alloy C, then the ratio of copper to zinc in C is: | PYQs + Solutions | AfterBoards
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JIPMAT 2025

Arithmetic
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Hard

The ratios of copper to zinc in alloys A and B are 3:4 and 5:9, respectively. If A and B are taken in ratio 2:3 and melted to form new alloy C, then the ratio of copper to zinc in C is:

✅ Correct Option: 4
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Copper
Alloy A Alloy B
37\frac{3}{7} 514\frac{5}{14}
2 parts 3 parts
635+1570=2770\frac{6}{35}+ \frac{15}{70} = \frac{27}{70}
You can solve, Zinc =1−2770=4370=1 - \frac{27}{70} = \frac{43}{70}
Alternatively:
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Zinc
Alloy A Alloy B
47\frac{4}{7} 914\frac{9}{14}
2 parts 3 parts
835+2770=4370\frac{8}{35}+ \frac{27}{70} = \frac{43}{70}
Therefore, the ratio of copper to zinc in alloy C is 27:43. \newline Hence, the correct option is Option 4.

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