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A dealer buys dry fruit at the rate of R...

A dealer buys dry fruit at the rate of Rs. 100, 80 and 60 per kg. He bought them in the ratio `12 : 15 : 20` by weight. He in total gets 20% profit by selling the first two and at last he finds he has no gain no loss in selling the whole quantity which he had. What was the percentage loss he suffered for the third quantity? a.      b.          c.        d.

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