SOLUTION: On a recent trip, a trucker traveled 480 mi at a constant rate. Because of road conditions, the trucker then reduced the speed by 20 mph. An additional 40 mi was traveled at the re

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: On a recent trip, a trucker traveled 480 mi at a constant rate. Because of road conditions, the trucker then reduced the speed by 20 mph. An additional 40 mi was traveled at the re      Log On

                    SPEED         TIME            DISTANCE

first part              r          480/r            480

second part           r-20          40/(r-20)        40

total                                9