SOLUTION: Two trains travel a 160 km track each day. The express travels 10 km h-1 faster and takes 30 minutes less time than the normal train. Find the speed of the express
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Question 641310: Two trains travel a 160 km track each day. The express travels 10 km h-1 faster and takes 30 minutes less time than the normal train. Find the speed of the express
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the speed of the slower train in km/hr
= the speed of the faster train in km/hr
Let = time in hrs for the slower train to go 160 km
= time in hrs for faster train to go 160 km
---------------
Slower train:
(1)
Faster train:
(2)
--------------------------
(2)
From (1)
(1)
and
(2)
(2)
(2)
(2)
(2)
Check my work and then check the results
for , the slower train and ,
the faster train
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