Seven minutes is 7/60 hours.
If you want to make your speed in miles per hours then divide 7 into 60.
60/7=about 8.57 miles per hour. A fast jogger could do this. I'm a fast walker and can average 4.1 mph.
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To run a 13-minute mile you will need to average 4.62 miles per hour for the whole 13 minutes.
You need to run at an average speed of 15 mph.
you want your speed to be 1mile/12 minutes . This has units of miles per minute. To change to miles per hour you write 12 minutes as 1/5 of an hour. Then your speed is; 1mile/(1/5)hrs. Invert and multiply to get 5 miles/1 hrs or 5 miles per hr.
Well, isn't that a lovely little puzzle! If the train is 1 mile long and it's traveling at 1 mile per minute, it will take a total of 2 minutes for the train to completely pass through the 1-mile tunnel. Just imagine the train chugging along steadily, enjoying the journey through the tunnel, and coming out the other side with a happy little toot of its whistle.
erm 1 mile ?