Question

एक रेलगाड़ी 80 किमी/घंटा की रफ्तार से चलकर
8 किमी घंटा की रफ्तार से उसी दिशा में चल रहे व्यक्ति
को 2 सैकण्ड में पार कर लेती है रेलगाड़ी की लंबाई ज्ञात करो ?​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Answer : 245 meter.

Speed = 45 x 5 m/sec = 25 m/sec. 18 2

Time = 30 sec.

Let the length of bridge be x metres.

Then, 130 + x = 25 30 2 2(130 + x) = 750 x = 245 m.

4. Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is: