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11 October, 12:33

On a journey of 600 km, a train was delayed 1 hour and 30 min after having covered

1 / 4

of the way. To arrive on time at the destination, the engine driver had to increase the speed by 15 km/hour. How long did the train travel for?

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Answers (1)
  1. 11 October, 13:16
    0
    v1 (t4) + 0 (1.5) = 150 and combined with the second equation will give the correct answer.
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