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By selling 12 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?

By selling 12 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?

A. 8
B. 9
C. 12
D. 16
Explanation:
80% — 12
120% — ?
80/120 * 12 = 8