Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train?

Question

নিচের অপশন গুলা দেখুন

• 27 7/9 mts
• 21 1/4 mts
• 25 8/7 mts
• 22 mts

Answer 1

সঠিক উত্তর হচ্ছে: 27 7/9 mts

ব্যাখ্যা:

Relative speed = (40 - 20) km/hr =		20 x	5		m/sec =		50		m/sec.
			18				9

Length of faster train =		50	x 5		m =	250	m = 27	7	m.
		9				9		9