There were 22 people in a queue for a free wafer at Cathy's Cafe. Justin was the eighth person in the queue. Carl was the fourth last person in the queue. How many people were there between Justin and Carl?
Justin's position: Number 8
Carl's position: 22 - 4 + 1 = Number 19
Number of people between them
= 19 - 8 - 1
= 10
Answer(s): 10