The polar explorers hiked 7/10 of a mile across the frozen wilderness during the first hour. They saw three polar bears from a distance. During the second hour of their hike, they saw eight polar bears, but only hiked 1/5 mile. How many miles did they hike in the two hours?
+37167 7/10 mile + 1/5 mile = 7/10 + 2/10 = 9/10 mile ( the number of polar bears is not relevant)
