SOLUTION: Two trains leave a city on parallel tracks,traveling the same direction. The passenger train is going twice as fast as the freight train. After 45 minutes, the trains are 30 miles
Algebra.Com
Question 420155: Two trains leave a city on parallel tracks,traveling the same direction. The passenger train is going twice as fast as the freight train. After 45 minutes, the trains are 30 miles apart. Find the speed of each train.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Write an equation for both trains
Let = speed of freight train
passenger train
(1)
freight train
(2)
------------------
Substitute (2) into (1)
(1)
(1)
(1)
(1)
and
the speed of the passenger train is 80 mi/hr
the speed of the freight train is 40 mi/hr
check:
(1)
(1)
mi
and
(2)
mi
OK
RELATED QUESTIONS
Two trains leave a city on parallel tracks, traveling the same direction. The passenger... (answered by Edwin McCravy)
Two trains are lewaving a city on parallel tracks, travelling in the same direction. The... (answered by Alan3354)
How do I solve the following:
A freight train leaves the train station 2 hours before... (answered by stanbon,Edwin McCravy)
a freight train leaves the train station 1 hour before a passenger train. The two trains... (answered by ankor@dixie-net.com)
A freight train leaves the train station 4 hours before a passenger train. The two... (answered by josmiceli)
A freight train leaves the train station 2 hours before a passenger train. the two trains (answered by ankor@dixie-net.com)
a freight train leaves the station 2 hours before a passenger train. There are two trains (answered by mananth,angelchristian16)
A passenger train leaves Norfolk, Virginia, 1.2 hours after a freight train leaves. The... (answered by Fombitz)
A passenger train leaves Norfolk, Virginia, 1.2 hours after a freight train leaves. The... (answered by haileytucki,stanbon)