a train is booked to do the run between two places 55 km apart in 1 hour 20 minutes . if it travels for the first 30 km 36 km an hour at what speed must it travel for the rest of the distance in order to complete the journey time
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Total distance= 55km
total time = 1hr+20 min= 4/3min
first case:-
time = 30 min = 1/2 he
speed = 36km/he
distance= 1/2*36= 18km
rem distance= 55-18= 37km
rem time= 4/3-1/2=5/6hr
speed required= distance/time=37*6/5=44.40km/hr
total time = 1hr+20 min= 4/3min
first case:-
time = 30 min = 1/2 he
speed = 36km/he
distance= 1/2*36= 18km
rem distance= 55-18= 37km
rem time= 4/3-1/2=5/6hr
speed required= distance/time=37*6/5=44.40km/hr
ayushmath:
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