Body: Winter is almost here and most animals are migrating to warmer countries. There were 89 bird families living near the mountain. If 60 bird families flew away for winter
Question: How many more bird families flew away for the winter than those that stayed behind?
question_concat: Winter is almost here and most animals are migrating to warmer countries. There were 89 bird families living near the mountain. If 60 bird families flew away for winter How many more bird families flew away for the winter than those that stayed behind?