Question
Harsh and Dev planned to meet each other. Dev starts to
travel from point A to B at the speed of 42 kmph at 10:00 AM and Harsh starts from point B to A at the speed of 28 kmph at 12:00 PM. If they meet at 2: 30 PM, find the distance between A and B.Solution
Let required distance be D km. Distance covered by Dev till 12:00 PM = 42 × 2 = 84 Time taken by them to meet each other = (D − 84)/(42 + 28) = 2.5 So, required distance = D = 2.5 × 70 + 84 = 259 km
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