Question
A train travelled for the first 120 km at a certain
speed in 3 hours. After that, the speed of the train decreased by 5 km/h. If the train took a total of 6 hours to reach its destination, then find the total distance travelled by the train.Solution
ATQ, Speed of the train by which it travelled 120 km = 120/3 = 40 km/h Time taken to cover the remaining distance = 6 - 3 = 3 hours Decreased speed of the train = 40 - 5 = 35 km/h Distance travelled with decreased speed = 35 × 3 = 105 km Therefore, required distance = 120 + 105 = 225 km
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