SOLUTION: Sandy biked @ 15 mph for a time then walked @ 5 mph. She traveled a total of 75 miles. Had she biked the whole time she would have traveled 135 miles. How many hours did she wal

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Question 699116: Sandy biked @ 15 mph for a time then walked @ 5 mph. She traveled a total of 75 miles. Had she biked the whole time she would have traveled 135 miles. How many hours did she walk?
Answer by lynnlo(4176) About Me  (Show Source):
You can put this solution on YOUR website!
she walked 6 hours