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A train travels 480 km at a uniform speed if the speed had been 10 kilometre per hour more it would have taken 4 hours less for th

By Ivy

A train travels 480 km at a uniform speed if the speed had been 10 kilometre per hour more it would have taken 4 hours less for the same journey find the speed of a train​

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Let R: A(B such that (a, b) in R, A = {1,2,3,4,5} B = {3,4,5} and a < b
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Alex has a string with nine fixed dices with one number written on each of them. The numbers are in the order 9 8 7 6 5 4 3 2 1. H

1 thought on “A train travels 480 km at a uniform speed if the speed had been 10 kilometre per hour more it would have taken 4 hours less for th”

  1. 40km/hour

    Step-by-step explanation:

    Let the speed of train be xkm/hours

    Then,

    Time taken to cover the distance of 360km=360/x hour

    If the speed of train increased by 5km/hour.

    Time taken to cover the same distance =(360/x–360/x+5=1

    360(×+5)–360×/×(×+5)=1

    360x+1800–360×+/ײ+5×

    x²+5×–1800=0

    x²+45×–49×–1800=0

    ×(×45)–49(×+45)=0

    (×+45)(×–40)=0

    (×+45)(×–40=0

    (×+45)(×–40)=0

    x: –5 or x = 40

    THUS,ANSWER IS 4 km/hour

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