SOLUTION: A motorist travels 90km at 120km/hr , and 40km at 90km/hr . what is the average speed of the trip??

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Question 344537: A motorist travels 90km at 120km/hr , and 40km at 90km/hr . what is the average speed of the trip??
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Rate*Time=Distance
.
.
.


hr
hr
Total time for the trip was,


hr
Total distance for the trip was,

km
So, the average speed was,

kph
or approximately
kph

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