SOLUTION: a cyclist travels 50 miles at an average rate, r, then travels 5 miles per hour faster during the return trip. write an expression that describes the total time of the trip.
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: a cyclist travels 50 miles at an average rate, r, then travels 5 miles per hour faster during the return trip. write an expression that describes the total time of the trip.
Log On
Question 993133: a cyclist travels 50 miles at an average rate, r, then travels 5 miles per hour faster during the return trip. write an expression that describes the total time of the trip.
You can put this solution on YOUR website! a cyclist travels 50 miles at an average rate, r, then travels 5 miles per hour faster during the return trip. write an expression that describes the total time of the trip.
----------------
Avg speed of a round trip = 2*r1*r2/(r1 + r2) where r1 & r2 are the 2 speeds.
----
Avg speed of this RT is 2r*(r+5)/(2r+5)
t = d/r