Marissa's Fashions purchases designer boots from a manufacturer for $50.88 per pair. Marissa then adds a certain amount to the price of the boots as a markup when she sells them in the store. The total cost for a customer buying the boots at the store is $90.10. This includes a 6.25% sales tax that is added after the markup. The percent of markup before tax is about ___%, which is a markup of $___
per pair of boots.