Dominik observed a chairlift. First, he found that one chair passed the lower station every 8 seconds. Then he picked one chair, pressed his stopwatch, and wanted to measure how long it would take for the chair to return to the lower station. After 3 minutes and 28 seconds, the cable car was sped up, so chairs passed the lower station every 5 seconds. When Dominik's chair passed again, the stopwatch showed 11 minutes and 13 seconds. How many chairs did the cable car have?

(Dillingerová)
In 3 minutes and 28 seconds (which is 208 seconds), 208 / 8 = 26 seats passed by Dominik. From the moment of acceleration until Dominik's seat passed by, 11 minutes and 13 seconds - 3 minutes and 28 seconds, which is 7 minutes and 45 seconds (465 seconds) elapsed. During the time the cable car was moving faster, 465 / 5 = 93 seats (including Dominik's) passed by. The cable car had a total of 26 + 93 = 119 seats.