A train is booked to do the run between two places,55km apart, in 1hr 20min. If it travels for the first 30 km at 36 km/hr ,at what speed must it travel for the rest order to complete the journey in time
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Answer:67.56 km/ hr
Step-by-step explanation:
Time taken in travel 30km=30/36hr
Rest time it has= 1.20- 30/36=0.37hr,
Rest distance =25 km
Speed= 25/0.36=67.56km/hr
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