1. A bus leaves the station at exactly 7:43 a.m. and arrives at its destination at exactly 8:22 a.m. on the same day. How long, in minutes, was the bus trip?
1. The bus leaves at exactly 7:43 a.m., which means that after the bus has travelled for exactly 17 minutes, it will be 8:00 a.m.
The bus arrives at its destination at exactly 8:22 a.m., which is exactly 22 minutes after 8:00 a.m. Therefore, the number of minutes the trip took was $17+22=39$.
ANSWER: 39