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Anurag loses one-seventh of the cost by selling a pen for Rupees 144. If the pen is sold for Rupees 189, what is the gain percent?
A11%
B11.5%
C12.5%
D14%
Answer & Solution
Correct answer: C. 12.5%
1. Selling at 144 gives a loss of 1/7, so 144 = (6/7) x cost, giving cost = 168.
2. Selling at 189 gives gain = 189 - 168 = 21.
3. Gain % = (21/168) x 100 = 12.5%.
_Source: RRB Group D CEN-02/2018 PYQ, Q.85._
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