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प्रश्न
Find the cost price of an article, which is sold for Rs. 4050 at a loss of 10%. Also, find the new selling price of the article which must give a profit of 8%.
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उत्तर
S.P. of an article = Rs. 4050
Loss = 10%
(i) ∴ C.P. of the article = `("S.P" xx 100)/(100 - "loss %")`
`= (4050 xx 100)/(100 - 10)`
`= (4050 xx 100)/90`
= Rs. 4500
(ii) When gain = 8 %
∴ New S.P. of the article
`= ("C.P." (100 + "gain %"))/100`
`= (4500 (100 + 8))/100`
`= (4500 xx 108)/100` = Rs. 4860
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