A certain metal M ocas in four compounds namely A,B,C and D. A has 20% – InterviewSolution

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1.	A certain metal M ocas in four compounds namely A,B,C and D. A has 20% of M, B has 68% of M, C has 73% of M and D has 60% of M. If metal M is extracted from A,B,C and D, it costs Rs 35 per kg, Rs 40 per kg, Rs 100 per kg and Rs 45 per kg respectively. which mineral can be considered as an effective ore of M?
Answer» A B C D Answer :B

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