Problem 1. Student Vasya, who lives in the countryside, arrives at the station by train every evening after classes at 6 PM. By this time, his father picks him up by car and takes him home. One day, Vasya's last class at the institute was canceled, and he arrived at the station an hour earlier. Unfortunately, he forgot his phone at home, so he started walking towards the car, met it, and got home 20 minutes earlier than usual. What time was it on the clock when Vasya met his father?
# Solution:

Vasya arrived home 20 minutes earlier than usual, during which time his father would have driven the distance Vasya walked twice. Therefore, on the way to the station, his father saved 10 minutes and met Vasya 10 minutes earlier than usual, that is, at 17:50.

Answer: $17: 50$.