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Sarah's mom takes the parkway to work it takes her 30 minutes to travel from mile marker 88th where she answers to her exit at mile marker 121 what is her average speed

Respuesta :

121- 88 = 33 miles traversed in 30 minutes.
 
d = r*t
33 = r* (.5 hr)

Solve for r. Average speed will be in miles per hour.
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