Two students start from opposite ends of an 8 km course walking towards each
other. One student is walking at a rate of 4 km/h and the other is walking at a
rate of 6 km/h. After how long will the students meet?
because in an hour they will go 10km in total, but the course is only 8 Km long, which is .8 times 10 Km so the time should be .8 times one hour which is .8*60= 48 minutes