1. A ruby stone was bought for Rs. 1600 at Jaipur. A sum of Rs. 2400 was spent on making a ring with the ruby stone. It was advertised for sale at Bombay for Rs. 7800. If a discount of 10% was given, then the % profit made was
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By: anil on 05 May 2019 01.56 am
Cost price of ruby stone = 1600 Sum spent additionally on it = 2400 => Total cost price = 1600+2400 = 4000 Marked price = 7800 Discounted amount = $$frac{10}{100}$$ * 7800 = 780 => Selling price = 7800-780 = 7020 Profit % = $$frac{7020-4000}{4000}$$ * 100 = $$frac{3020}{40}$$ = 75.5%
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