Question 48
Every school in the region has sent 3 students to a contest. Andrej, Blaž and Žan represented the same school. When all the contestants lined up to receive their start numbers, Andrej realized that there were exactly as many contestants in the line before him as there were behind. Both his friends were behind him: Blaž was 19th and Žan was 28th. How many schools are there in this region?