A train crosses an electric pole in 5 seconds and a railway bridge is 600 m long in 35 seconds. Find the speed of the train in km/h. and the length of the train?​

  • matematika

    Subject:

    Math
  • Author:

    bug96
  • Created:

    1 year ago

Answers 1

Step-by-step explanation:

Train crosses an electric pole in 5 sectime to crosses the tunnel = 20 sec

formula used :speed = distance / time

Calculation :

The length of the tunnel be x m and the length of the best be y m

Time = distance / speed

5 = ( y / 90) y = 450 mTime to crosse the tunnel = Distance / Speed

20= ( y + x ) / 90

20 × 90 = ( 450 + x )

x = 1800 - 450 = 1350

The length of the tunnel is 1350

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