a train is booked to do the run between two places 55 km apart in 1 hr 20 min if it travels for the first 30 km at 36 km an hour at what speed must it travel for the rest of the distance in order to complete the jorney in time
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Answer:
50Kmph
Step-by-step explanation:
remaining distance= 25
time taken to cover 30 Km
= 30/36= 5/6h=50min
time left= 80min- 50min = 30min= 1/2h
speed required= 25/(½)= 50Kmph
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