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Kiran sells pens at a profit of 20% for Rs. 60. But due to lack of demand he reduced its price to Rs. 55. Then
Since selling at Rs. 60 gives a 20% profit, the cost price is $$\frac{60}{1.2} = 50$$. Selling at Rs. 55 gives a profit of $$55 - 50 = 5$$, which as a percentage of the cost price is $$\frac{5}{50} \times 100 = 10\%$$. So he still makes a profit of 10%.
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