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One lap around a track is 1/4 mile. If it takes Mrs. Murphy 1/10 hour to walk 1 lap, what is her walking speed in miles per hour? Show your work.

Respuesta :

Answer:

The speed of Murphy to cover one lap is [tex]\dfrac{1}{40}[/tex] miles per hour .

Step-by-step explanation:

Given as :

The total distance of one lap around track = d = [tex]\dfrac{1}{4}[/tex] miles

The time taken by Murphy to walk one lap = t = [tex]\dfrac{1}{10}[/tex] hours

Let The speed of Murphy = s miles per hour

Now, According to question

Speed = Distance × Time

Or, s = d × t

Or, s =  [tex]\dfrac{1}{4}[/tex] miles × [tex]\dfrac{1}{10}[/tex] hours

Or, s = [tex]\dfrac{1\times1}{4\times 10}[/tex] mi/h

Or, s =  [tex]\dfrac{1}{40}[/tex] mi/h

So,The speed of Murphy = s = [tex]\dfrac{1}{40}[/tex] miles per hour

Hence, The speed of Murphy to cover one lap is [tex]\dfrac{1}{40}[/tex] miles per hour . Answer