Five kg of butter was bought by a shopkeeper for $₹ 300 .$ One kg becomes unsaleable. He sells the remaining in such a way that on the whole he incurs a loss of I 0%. At what price per kg was the butter sold?

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$₹ 67.50$

$₹ 52.50$

$₹ 60$

$₹ 72.50$

answer is A.

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Detailed Solution

Let S.P $= ₹ X$

$∴ S.P.$ of $4 kg = ₹ 4 x$

$∴ 4 x = \frac{100 - 10}{100} \times 300 \Rightarrow x = \frac{270}{4} = ₹ 67.50$

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