Alloy A contains iron and copper in ratio 4 : 5. Alloy B con

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IB ACIO Grade II Previous Paper 5 (Held on: 19 Feb 2021 Shift 1)
General Awareness
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Quantitative Aptitude
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Reasoning
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English
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General Knowledge
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Alloy A contains iron and copper in ratio 4 : 5. Alloy B contains iron and copper in ratio 3 : 4. If 45 kg of alloy A and 63 kg of alloy B are mixed, then what is the final ratio of copper and iron?

[IB ACIO Grade II Previous Paper 5 (Held on: 19 Feb 2021 Shift 1)]

A

61 : 47

B

57 : 41

C

59 : 45

D

64 : 47

EXPLANATION

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