A train 555 meters long crosses a man walking in the opposite direction at a speed of 3.4 km/h in 9 seconds. What is the speed of the train (in km/h)?
A train 555 meters long crosses a man walking in the opposite direction at a speed of 3.4 km/h in 9 seconds. What is the speed of the train (in km/h)?
555 m लंबी एक रेलगाड़ी विपरीत दिशा में 3.4km/h की चाल से चल रहे एक व्यक्ति को 9 सेकंड में पार करती हैं। रेलगाड़ी की चाल (km/h में) क्या हैं?
Detailed Solution & Logic
Correct Answer:
218.6
For example, the train problem would be written like this:
Distance covered = train length = 555 m
Time = 9 sec
Relative speed = $555/9 = 61.67$ m/s
Convert into km/h:
$61.67 \times \frac{18}{5} = 222.1$ km/h
Man’s speed = 3.4 km/h
Train speed = $222.1 - 3.4 = 218.7$ km/h
$\therefore$ Correct Answer: 218.6 km/h ✅
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