SOLUTION: If a map has a scale of 11/2 inches to the mile and if a distance between two points on the map is 9 inches apart, how much is that distance in actual miles? The book says 6 mi

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Question 32408: If a map has a scale of 11/2 inches to the mile and if a distance between two points on the map is 9 inches apart, how much is that distance in actual miles?

The book says 6 miles. why? 11/2 * 9??
Answer by Cintchr(481) About Me  (Show Source):
You can put this solution on YOUR website!
change the mixed number to an improper fraction first
+in%2Fmi+=+in%2Fmi+ use this relationship to find the actual distance
+%283%2F2%29%2F1+=+9%2Fm+
cross multiply
+%283%2F2%29m+=+9+
multiply by 2/3
+m+=+18%2F3+
+m+=+6+