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Sara's mom takes the parkway to work. It takes her 30 minutes to travel from mile marker 88 where she enters to her exit at mile marker 121. What is her average speed?


4.0 mph


16.5 mph


33 mph


66 mph

Verified Answer :

SirCole

To figure speed you must find the distance and the time

To find the distance in this instance you must subtract mile marker 88 from 121

121 - 88 = 33

And the time is 30 minutes, but since your looking for miles per _hour_. You must convert it
30 minutes = 0.5 hours

Lastly, you divide distance over the time
33/0.5 = 66 mph
 

marivera102404

Answer: Sara's mom is traveling at the speed of 66 mph

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