kabir bought 100 articles for Rs 3000 .He sold 25 of them at a gain of 5%. At what gain % must he sell the remaining articles so as to gain 20% on the whole?

kabir bought 100 articles for Rs 3000 .He sold 25 of them at a gain of

1.	kabir bought 100 articles for Rs 3000 .He sold 25 of them at a gain of 5%. At what gain % must he sell the remaining articles so as to gain 20% on the whole?
Answer» COST price of 100 ARTICLES is ₹3000. cost price of 25 articles is ₹750. gain by selling 25 articles =5/100×750=₹37.50 . total gain by selling 100 articles =20% of 3000=20/100×3000=₹600. So gain which has to be obtained by selling 75 articles=600-37.5=₹562.50. cost price of 75 articles =3000-750=₹2250. gain%=562.50/2250×100=562.50/22.50=25% So he NEEDS to sell REMAINING articles at gain of 25%.

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kabir bought 100 articles for Rs 3000 .He sold 25 of them at a gain of 5%. At what gain % must he sell the remaining articles so as to gain 20% on the whole?

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