If 5 2/7 kg of potatoes cost Rs 10 4/7, what is the cost of 3 kg of potatoes?

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• A Rs 1
• B Rs 4
• C Rs 6
• D Rs 5

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Answer: C. Rs 6

5 2/7 kg = 37/7 kg and Rs 10 4/7 = Rs 74/7.
Cost of 1 kg = 74/7 / 37/7 = Rs 2.
Cost of 3 kg = 2 x 3 = Rs 6.

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