A student walks and jogs to college each day. The student averages 5 km/h walking and 9 km/h jogging. The distance from home to college is 8 km, and the student makes the trip in 1 hour. How far does the student jog?
Since the total travel duration is 1 hour,
The distance covered by jogging is
Meanwhile, the distance covered by walking is
Since the total distance covered is 8 km, we have
We want the distance covered by jogging,