Question

4. Zinc, copper, aluminum and tin are melted together in the ratio 8: 6: 3:1 to form a mass. Zinc costs
Rs. 30 per kilogram. What is the cost of copper per kilogram?
1. The cost of alloy is Rs. 150 per kilogram.
II. Cost of aluminum and copper per kilogram is same.
a) 1
b) 2
c) 3
d) 4
Is the data sufficient to answe the question

Answer 1

Answer:

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Explanation:

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Answer 2

The cost of copper per kilogram cannot be calculated as the data is not sufficient to answer.

What more data do we need?

• The cost of tin is not given.
• It is also not mentioned whether the price of the alloy is set at a profit or not.  

Why is the problem not solvable?

• There are two variables here, viz., the price of copper and the price of tin.
• We also do not know the price of aluminium only that it is the same as copper.

Hence, the data is insufficient to solve this problem.