The distance between two points A and B is covered in 51/2 hours at a speed of 50 km/hr. If the speed is increased by 5km/hr , how much time would be saved?
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let distance between them be x
time taken to travel at 50kmph is 5.5 hrs.
so distance is 50 ×5.5=275km
if speed is increased by 5kmph new speed is 55kmph
so time taken is 275/55=5 hrs
so half hr will be saved if speed is increased by 5kmph.
time taken to travel at 50kmph is 5.5 hrs.
so distance is 50 ×5.5=275km
if speed is increased by 5kmph new speed is 55kmph
so time taken is 275/55=5 hrs
so half hr will be saved if speed is increased by 5kmph.
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