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

Question 1156092: 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 reduced rate. The entire trip took 9 h. Find the rate of the trucker for the first 480 mi.
Answer by josgarithmetic(39623) (Show Source): You can put this solution on YOUR website!

                    SPEED         TIME            DISTANCE

first part              r          480/r            480

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

total                                9

RELATED QUESTIONS
On a recent trip, a trucker traveled 225 mi at a constant rate. Because of road... (answered by lwsshak3)

On a recent trip, a trucker traveled 325 mi at a constant rate. Because of road... (answered by ikleyn,josgarithmetic,greenestamps)

On a recent trip, a trucker traveled 525 mi at a constant rate. Because of road... (answered by josgarithmetic,MathLover1)

on a recent trip, a trucker traveled 330 mi at a constant rate. because of road... (answered by mananth)

"On a recent trip, a trucker traveled 300 mi at a constant rate. Because of improved road (answered by happyhaps)

On a recent trip, a trucker traveled 300 mi at a constant rate. Because of improved road... (answered by mananth)

on a recent trip, a trucker traveled 275mi at a constant rate. because of road... (answered by richwmiller)

I'm having trouble setting the equation up correctly. It reads - on a recent trip, a... (answered by stanbon)

Please help: A trucker maintained a constant speed and traveled 480 miles. On his way... (answered by richwmiller)