a car takes 2 hours to cover its distance of 240 km if the speed is increased by 40 km per hour how long will it take to cover same distance
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2hrs to cover 240km
1hr to cover 120km
speed increased by 40km/hr
so new speed = 120 + 40 = 160km/hr
time = distance/speed
240/160 = 1.5hrs
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