A mark up the price of an article by 50% and then allow a discount of 20% and sells it to B who sells it for ₹ 20 more than what he purchased for. If selling price of B is 30% more than the original cost price of the article, then find profit percent of B.

8.33%

ATQ,

        100R × \(\frac{130}{100}\) = 120R +20

                                                  ⇒ 1R → 2

         Cost price of B = 120 × 2 = 240

         SP of B = 240 + 20 = 260

         Profit % = \(\frac{260 - 240}{240}\) × 100 = 8.33%