900 km apart and run towards one another at average speeds of 38 kmph and 22 kmph respectively. After what time in hour) will they meet? (a) 15 (b) 2272 (c) 14 (d) 1834 3! A train crossed a platform in 25 seconds. The a length of the platform is 240 metre. What is the length of the train ?
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option a 15
length of train is 435
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