A dealer bought an item at a discount of 10% on its original price. He sold it for an amount 35% more than the original price. What percentage of profit did he get?

42.5% 50% 62.5% 57.5%

50%

Let the original price = 100         CP                     SP       100 - D%           100 + P%      100 - 10%           100 + 35%          90                      135 Profit% = ( 135 - 90 ) × \(\frac{100}{90}\)  = 50%