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A dealer sells an article for Rs. 75 and gains as much per cent as the cost price of the article. Find the cost price of the article. |
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Answer» Correct Answer - Rs. 50 Let the CP of the article be Rs. x. Then, gain `=x%`. `:." "SP=Rs. {((100+x)x)/(100)}=Rs. {(x^(2)+100x)/(100)}` `implies" "(x^(2)+100x)/(100)=75impliesx^(2)+100x-7500=0impliesx^(2)+150x-50x-7500=0.` |
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