SOLUTION: The Metro Rail travels 240 km at a uniform rate.If the speed had been 8 km per hour more,the journey would have taken 1 hour less.what is the speed of the train?
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Question 162015: The Metro Rail travels 240 km at a uniform rate.If the speed had been 8 km per hour more,the journey would have taken 1 hour less.what is the speed of the train?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Given:
km
If the speed was km/hr
the time would have been hr
The equations are:
and
And, since ,
Subtract from both sides
Substitute this in
Divide both sides by
hrs
km/hr
The speed of the train was 40 km/hr
check answer:
OK
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