- #1
rcmango
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Homework Statement
theres a motorist that travels 30 miles at 60 mph, and another 60 miles at 30 mph.
Homework Equations
The Attempt at a Solution
The average speed of the motorist is 36 mph
how was this computed?
i know avg speed is distance / chng of time
however 30+ 60 divided by 60 + 30 is not 36.
need help.