Answer :
if nthe shop has a mark up rate of 50% and they cost 300 to buy you multiply 300 by 50% convert 50% to decimal
so you do .5*300=150
then you add 150 to 300 which means that the shop sells the skis for 450 dollars.
so you do .5*300=150
then you add 150 to 300 which means that the shop sells the skis for 450 dollars.