Since each dryer takes five minutes to dry a person, and there are three dryers, a total of 3 * 5 = <<3*5=15>>15 minutes are needed to dry three people.
Nineteen other people are waiting, so the last person will need to wait 15 minutes + 15 minutes = <<15+15=30>>30 minutes. Answer: \boxed{30}.
At the amusement park near the exit for the Splasher ride, they offer a dryer for people to walk in and get completely dry in only five minutes. There are three dryers. Three people just walked into the three dryers and started the machine. Nineteen other people are waiting outside the dryers. How long will the last person in the line need to wait?
1 answer