A bus travelling at 42 km/h completes a journey in 20 hours. At what speed will it have to cover the same distance in 12 hours?
A68 km/h
B73 km/h
C70 km/h
D80 km/h
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Related Questions:
A person has to travel 300 km in 10 hours. If he travels one-third of the distance in half of the given time, then what should be the speed of that person so that he covers the remaining distance in remaining time?
A person divides his total journey into three equal parts and decides to travel the three parts with the speeds of 40, x and 15 km/h, respectively. If his average speed during the whole journey is 24 km/h, then find the value of x.
A train 180 m long crosses a milestone in 12 seconds and crosses the other train of the same length travelling in the opposite direction in 15 seconds. Find the speed of the other train.
ഒരു ട്രെയിൻ മണിക്കൂറിൽ 90 കിലോമീറ്റർ വേഗതയിൽ ഓടുന്നു . 150 മീറ്റർ നീളമുള്ള പാലം 15 സെക്കൻഡിനുള്ളിൽ കടന്നുപോകുന്നു . അപ്പോൾ മീറ്ററിൽ ട്രെയിനിന്റെ നീളം എത്ര ?
A train having length 330 meters takes 11 second to cross a 550 meters long bridge. How much time will the train take to cross a 570 meters long bridge?