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The cost of the marble varies directly with square of its weight. Marble is broken into 3 parts whose weights are in the ratio 3 : 4 : 5. If marble had been broken into three equal parts by weight then there would have been a further loss of ₹ 1800. What is the actual cost of the original (or unbroken) marble?

A

Rs. 3600

B

Rs. 10800

C

Rs. 2160

D

None of these

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The correct Answer is:
D
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