a car can travel the distance between the home and the office which are 1.2 km apart in 1.8 minutes how much faster must it travel to do the distance in 1.5 minutes
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Speed of car in 1.8min traveling =1.2/1.8 = 0.67km per min.
speed required if it travels distance in 1.5 min =1.2/1.5 = 0.8km per min.
now how faster it should travel to do distance in 1.5 minutes =
speed in 1.5min traveling -speed in 1.8min traveling = 0.2km per minute
It should travel 0.2km per minute faster
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