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1. |
A man purchased 150 pens at the rate of $ 12 per pen. He sold 50 pens at a gain of 10%. The percentage gain at which he must sell the remaining pens so as to gain 15% on the whole outlay is |
A. | <table><tr><td rowspan="2">21</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">%</td></tr><td align="center">2</td></table> |
B. | 20% |
C. | 17% |
D. | <table><tr><td rowspan="2">17</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">%</td></tr><td align="center">2</td></table> |
Answer» E. | |