Arithmetichard · Past Paper
A man buys 11 pens for Rs. 10 and sells 10 pens for Rs. 11. Find gain %.
A21%
B11%
C10%
D121%
✓ Correct Answer: A — 21%
CP of 1 = 10/11. SP of 1 = 11/10. Gain % = ((121-100)/100)*100 = 21%.
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