## 22. On the way from college

Francine leaves college at noon every day, and at the same time her father sets out to meet her in his car. One day, Francine left earlier than usual and started walking home. After a quarter of an hour, she met her father, got into the car, and they drove back; that day they arrived home 10 minutes earlier than usual.

At what time did Francine leave college?
22. The father drove the car 10 minutes less than usual: 5 minutes less in the direction from home to college and 5 minutes less in the return direction. Therefore, he met Francine 5 minutes earlier than usual. By that time, she had been walking for a quarter of an hour. Thus, Francine left 20 minutes earlier, i.e., at 11:40.