A local hamburger shop sold a combined total of 513 hamburgers and cheeseburgers on Friday. There were 63 more cheeseburgers sold than hamburgers. How many hamburgers were sold on Friday?

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%