SOLUTION: A mover's van left Middleton at 8:00 AM and drove to Bayside at an average speed of 70km/h. At 9:00 AM, the Riley's left Middleton following the same route as the van. If both arri

Question 172651: A mover's van left Middleton at 8:00 AM and drove to Bayside at an average speed of 70km/h. At 9:00 AM, the Riley's left Middleton following the same route as the van. If both arrived in Bayside at 4:00 PM, what was the Rileys' average speed?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A mover's van left Middleton at 8:00 AM and drove to Bayside at an average speed
of 70km/h. At 9:00 AM, the Riley's left Middleton following the same route as
the van. If both arrived in Bayside at 4:00 PM, what was the Rileys' average speed?
:
Let s = Riley's average speed
:
From the information given we know that:
Mover's travel time = 8 hrs
Riley's travel time = 7 hrs
:
They both travel the same distance, write a distance equation: Dist = speed * time
:
Riley's dist = Mover's dist
7s = 8*70
:
7s = 560
s =
s = 80 km/hr is Riley's speed
:
You can confirm this: 7 * 80 = 560 km also
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