A person marks his goods x% above the cost price and allows a discount of 30% on the mark price. If his profit is 5%, then the value of x will be.

50

                   CP                       MRP

              (100 - 30)              (100 + 5)

                   70                       105

  x% = \(\frac{(105 - 70)}{70}\) × 100

        = 50%