A shirt was sold for Tk. 171 and the gain was as much percent as it costs in Taka amount. What was the purchase price of the shirt?

A shirt was sold for Tk. 171 and the gain was as much percent as it costs in Taka amount. What was the purchase price of the shirt? Correct Answer None of these

Let, the purchase price is x So, ( 171 - x) /x × 100% = x% ( 17100 - 100x) /x = x 17100 - 100x = x2 x2 + 100x - 17100 = 0 x = - 190, 90 So, x value is 90 The purchase price was 90 Tk.
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The exchange rate is the ruling official rate of exchange of Taka for other currencies. It determines the value of Bangladeshi goods in relation to foreign foods. If the Taka is devalued in terms other currencies Bangladeshi exports (which are paid for in Taka ) become cheaper to foreigners and Bangladeshi imports become more expensive to holders of Taka. What conclusion can be drawn form the information above?