9. Half of the way the tourists walked, and the other half they traveled by bus, spending a total of 5.5 hours on the entire journey. If they had traveled the entire distance by bus, it would have taken them 1 hour. How much time in total will the tourists spend if they walk the entire distance? How many times faster is it to travel by bus than to walk?
9. Half of the way the tourists traveled by bus in 0.5 hours (1:2=0.5), then on foot they walked the other half in 5 hours (5.5-0.5). Therefore, the entire journey will take the tourists 10 hours (5 * 2=10). Traveling by bus is 10 times faster than walking.