In a certain shop, the profit is 130% of the cost. If the cost increases by 28% and the selling price remains constant, then what is the profit percentage to the nearest whole number?

80%

According to the question if the profit is 130% of the cost price then,

                               CP                      SP

                             100                     230

After increasing      128                     230 = 102 Profit

Profit % = \(\frac{102 × 100}{128}\) = 80%