Problem
WHS Water Sports has three retail outlets: Hershey, Mechanicsburg, and Palmyra. The Hershey store does 50 percent of the total sales in a year, while the Mechanicsburg store does 35 percent of the total sales. Further analysis indicates that of the sales in Hershey, 20 percent are in boat accessories. The percentage of boat accessories at the Mechanicsburg store is 30 and the percentage at the Palmyra store is 25. Overall, find the probability that a sale by PSH Water Sports will be for a boat accessory.