Please consider the attached image of map.
We have been given that Jennifer has a map of Yellowstone National Park. The scale on this map is 1 cm = 9.8 miles. Jennifer measured some distances on the map. We are asked to find the actual distance from Old faithful to West Thumb.
We can see from the map that the distance on map between Old faithful and West Thumb is 2.5 cm. To find the actual distance, we will multiply map distance by scale as:



Therefore, the actual distance between Old faithful and West Thumb is 24.5 miles.