Dennis sold his skate board for 15% more than he paid for it if dennis paid d dollars for the skateboard which expression represents how much he sold for it

If the amount that has to be originally paid for the skateboard is only d and Dennis sold it for 15% more, the expression that would best represent the given scenario in this item is 
                                  1.15d
which means that the current selling price is 1.15 times the original value. 

Sorry can't answer that question