• 9%

  • 10%

  • 11 1/9%

  • None of these


S.P. = Rs. 100, gain = Rs. 10 тИ┤ C.P. = S.P. - gain = Rs. 90 тИ┤ Gain% = (10 / 90) x 100 % = 11 1/9%

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