An alloy is made by mixing metal A costing Rs 2000...

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An alloy is made by mixing metal A costing Rs. 2000 per kg and metal B costing Rs. 400 per kg in the ratio A : B = 3 : 1. What is the cost (in Rs.) of 8 kg of this alloy?

A. 1600

B. 9800

C. 6400

D. 12800

Answer: Option D

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