Question
A goods train leaves Delhi at a certain time. After 3
hours Rajdhani Express leaves the same station and travels in the same direction at the speed of 180 km/h. If Rajdhani catches up the goods train in 6 hours, then what is the speed of the goods train?Solution
Distance travelled by Rajdhani Express in 6 hours = 180 × 6 = 1080 km
Speed of goods train = 1080 / (3 + 6) = 120 km/hr
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