SOLUTION: how to find whether 10 mi/h is faster than 15 ft/s

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Question 372100: how to find whether 10 mi/h is faster than 15 ft/s
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
how to find whether 10 mi/h is faster than 15 ft/s
Start with expr%2810mi%2Fh%29

To cancel away the miles and bring in feet multiply by the unit
fraction5280ft%2F%281mi%29

expr%2810mi%2Fh%29expr%285280ft%2F%281mi%29%29

To cancel away the hours and bring in minutes multiply by the unit
fraction1h%2F%2860m%29

expr%2810mi%2Fh%29expr%285280ft%2F%281mi%29%29expr%281h%2F%2860min%29%29

To cancel away the minutes and bring in seconds multiply by the unit
fraction1min%2F%2860s%29

.

Cancel the miles:

.

Cancel the hours:

.

Cancel the minutess:

.

All that's left is

expr%28%2810%2A5280%29%2F%2860%2A60%29%29expr%28ft%2Fs%29

52800%2F3600ft%2Fs

44%2F3ft%2Fs

And 15ft%2Fs = 45%2F3ft%2Fs

So 15ft%2Fs is slightly faster than 10mi%2Fh

Edwin