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Q.
4 kg of a metal contains 1/5 copper and rest in Zinc. Another 5 kg of metal contains 1/6 copper and rest in Zinc.The ratio of Copper and Zinc into the mixture of these two metals:
A.
49 : 221
B.
39:231
C.
94:181
D.
None of these
View Answer
Correct choice: A
Explanation:
Copper in 4 kg = 4/5 kg and Zinc in 4 kg = 4 x (4/5) kg Copper in 5 kg = 5/6 kg and Zinc in 5 kg = 5 x (5/6) kg Therefore, Copper in mixture = 45+56=4930 kg and Zinc in the mixture = 165+256=22130kg Therefore the required ratio = 49 : 221
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