Alicia buys clothes for her hiking trip. At the store were she shops, all pants costs P dollars, and all jackets cost J dollars. For the longs mountain hike, she buys 3 pairs of pants and 3 jackets for a total of $99. For the scenic hike through the valley she bought 5 pairs of pants and only 1 jacket, for a total cost of $105. (assume there was no sales tax) What did the store charge her for a pair of pants? (round to the nearest dollar)