On Selling a book at $$\frac{9}{14}$$ of the marked price there is loss of 10%. What will be the ratio of marked price and cost price of the book?
Let marked price of the book = Rs. $$140x$$
=> Selling price = $$\frac{9}{14}\times140x=Rs.$$ $$90x$$
Loss % = 10%
=> Cost price = $$\frac{90x}{(100-10)}\times100=Rs.$$ $$100x$$
$$\therefore$$ Ratio of marked price and cost price of the book = $$\frac{140x}{100x}=7:5$$
=> Ans - (D)
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