Question
A vehicle was scheduled to complete a 360 km journey in
6 hours. For the initial 4 hours, it maintained a steady speed of 56 km/h. At what minimum speed must the vehicle travel for the remaining distance to ensure it arrives on schedule?Solution
Distance covered by the car in the first 4 hours = 56 X 4 = 224 km Remaining distance = 360 - 224 = 136 km Remaining time = 6 - 4 = 2 hours So, minimum speed required to car the distance on time = 136 ÷ 2 = 68 km/h Hence, option e.
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