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23. Kelvin travelled of his journey at 45 km/h and of the remaining journey at 90 km/h. The rest of his journey was completed in 1.2 h at an average speed of 100 km/h. What was the total time taken for the whole journey?​

23 Kelvin Travelled Of His Journey At 45 Kmh And Of The Remaining Journey At 90 Kmh The Rest Of His Journey Was Completed In 12 H At An Average Speed Of 100 Kmh class=