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yulyashka [42]
3 years ago
7

A train travels 360 km at a uniform speed. If the speed had been 5 km/h less, it would have taken 1 hour more for the same journ

ey. Find the speed of the train.
Please answer the question fast
Mathematics
1 answer:
sveticcg [70]3 years ago
6 0

Answer:

45 km/h

Step-by-step explanation:

Speed = x, distance= 360 km

------------

  • 360/x= 360/(x-5)- 1
  • 360/(x-5)-360/x= 1
  • 360x-360(x-5)=x(x-5)
  • x^2-5x=360*5
  • x^2-5x- 1800=0
  • x=45 km/h
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