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
Tk. 78
B
Tk. 82
C
Tk. 76
D
None of these
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.