SOLUTION: stanley drives m miles in x hours. How many hours would he save if he drove the same distance in k miles per hour?

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Question 471478: stanley drives m miles in x hours. How many hours would he save if he drove the same distance in k miles per hour?
Found 2 solutions by Alan3354, Edwin McCravy:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
d = rt
t = d/r
---------
difference = x - m/k (in hours)

Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
stanley drives m miles in x hours. How many hours would he save if he drove the same distance in k miles per hour?
Use TIME+=+%28DISTANCE_IN_MILES%29%2F%28SPEED_IN_MILES_PER_HOUR%29

If he were to drive the m miles at k miles per hour, then using 
the formula, the time would be

TIME+=+%28DISTANCE_IN_MILES%29%2F%28SPEED_IN_MILES_PER_HOUR%29+=+m%2Fk

Now to find out how much time he would save, we subtract this
shorter time m%2Fk hours from the longer time x hours, and
get

x - m%2Fk hours saved.

That's the answer.  

Edwin