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in Mathematics by (455 points)

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1 Answer

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by (648 points)
Distance = 200 km

Time = 4h 20min = 41/3 h= 13/3 h

Speed of train = 200x 3/13 =600/13km/h= 46.1km/h

If speed increases by 18 km/h

New speed= 64.1km/h

Time taken at new speed for 200 km = 3.12h = 3h 7 min approx

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