if a train runs 360 kilometers in 4 hours find how many metres it covers in 1 minutes
Answers
Answer:
heyyy,
Let the original speed of the train be x km/h.
Time taken to cover a distance of 360 km = 360/x hours.
New speed of the train = (x+5) km/h.
Time taken to cover a distance of 360 km at new speed = 360/x+5 hours.
Since, the train takes 1 hour less time,
∴360/x - 360/ x+5 = 1
⇒360 (5) = x² + 5x
⇒1800 = x² + 5x
⇒x² + 5x - 1800 = 0
⇒x² + 45x - 40x - 1800 = 0
⇒x (x+45) - 40( x +45) = 0
⇒(x+45) (x-40) = 0
⇒x = (-45), 40
But since speed cannot be in negative.
∴x = 40 km/hr.
Hence, the original speed of the train is 40 km/h.
Step-by-step explanation:
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Answer:
1500 meters
Step-by-step explanation:
Distance = 360 km
1 km = 1000 m
360 km = 360 * 1000 = 360000m
Time = 4 h
1h = 60 minutes
4 h = 4 * 60 = 240 minutes
In 240 minutes, the train covers a distance of 360000 m.
∴ In 1 minute, the train covers a distance of 360000 ÷ 240 = 1500 meters