A train travels at a certain average speed for a distance of 54 km and then travels a distance of 63 km at an average speed of 60 km/h more than the first speed if it takes 3 hours to complete the total journey .what is its first speed.
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30 km/hr............
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A train travels at a certain average speed for a distance of 54 km and then travels a distance of 63 km at an average speed of 60 km/h more than the first speed if it takes 3 hours to complete the total journey .what is its first speed.
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