SOLUTION: it took debra 4 hours to complete a 12-mile walk. What was her average speed in miles per hour?
<br>An easy way to remember the formula for this is to remember that "speed"="mil
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<br>An easy way to remember the formula for this is to remember that "speed"="mil
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Question 681023: it took debra 4 hours to complete a 12-mile walk. What was her average speed in miles per hour?
An easy way to remember the formula for this is to remember that "speed"="miles per hour". This can be written as Speed = miles/hour.
Another more popular way is the distance formula.
Where d = distance
r=rate (or speed)
t=time
We want to know what rate is, so if we solved this equation for r, we get:
Which is equivalent to the first equation.
Your d = 12 and t=4, substitute it into the formula: miles per hour
Hope that helped. Happy Calculating!!!
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