By selling 12 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?
Q1. By selling 12 pencils for a rupee a man loses 20%. How many for a rupee should he sell in order to gain 20%?
Answer: 8
Explanation: Selling 12 for Re. 1 at 20% loss means CP of 12 = Re. 1.25; for 20% gain, SP must be 1.25 × 1.20 = Re. 1.50, so he should sell 1/1.50 × 12... using unit method: for 20% gain, sell at 1.50 for 12, meaning 8 pencils for Re. 1.