A train has to travel a total of 351km. It travels the first 216 in 240 minutes. If the average spped remains the same, calculate the total time for the complete journey.
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Total distance =351 km
1km=1000m
351km=351×1000=351000
the train travelled 216 km in 240 minutes
1km =1000metre
216km=216000metre
1 minute=60 seconds
240 minutes = 240 ×60
=14400 seconds
speed = distance\time
speed = 216000 \14400
speed=15m\s
this speed remains constant through out the journey.
therefore speed for total distance is 15 m\s
speed=distance\time
time=distance\speed
time=351000\15
time=23400 seconds
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