A call center has 12 representatives ready to assist customers from 8:00 a.m. until 5:00p.m. Calls come into the call center at a rate of almost 35 calls per hour. The time customers must wait on hold before getting assistance are normally distributed with a mean of 24.8 minutes with a standard deviation of 8.5 minutes. What time represents the 25th percentile? (i.e. wait time that is longer than 25% of all other wait times ) Round your answer to 1 decimal place.