a airplane cover a distance of certain distance at a speed of 240 km/h in 5/3 hours .to cover the same distance in 5 hours it must travel at speed of
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Speed of aeroplane = 240Km/h
time= 5/3 hrs
distance = speed × time = 240×5 = 1200 = 400 Km
3 3
in 2nd condition
time = 5 hours
distance = 400 Km
Speed = distance = 400 = 80 km/hr
time 5
then he had to increase the speed= 240+80= 320 km/hr
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