In a 10 mile race, janet covere the first 2 mile sat a constant rate. She then sped up and rode her bike the last 8 miles at a r
ate that was 0.5 miles per minute faster. Janet's overall time would have been in 2 minutes faster had she ridden her bike the wholerace at the fastrer paceWhat was Janet's average speed (in miles per minute) for the whole race?