The above diagram shows 4 island countries in the Marina Ocean. Each inch on the map represents a distance of 500 miles. The capital of each island country is marked with a star.
A travel group leader takes a group of tourists from the capital of Green Island to the capital of Orange Island and back again. How long is the tour in miles?
The distance from Green Island to Orange Island is 6 inches on the map, which represents a distance of 6 * 500 = 3000 miles.
Therefore, the total distance traveled on the tour from Green Island to Orange Island and back again is 3000 * 2 = 6000 miles.