The average rate on a round-trip commute having a one-way distance d is given by the
Chapter 6, Problem 52(choose chapter or problem)
The average rate on a round-trip commute having a one-way distance d is given by the complex rational expression 2d d r1 + d r2 , in which r1 and r2 are the rates on the outgoing and return trips, respectively. a. Simplify the complex rational expression. b. Find your average rate if you drive to campus averaging 30 miles per hour and return home on the same route averaging 40 miles per hour. Use the simplified rational expression from part (a).
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