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 ✅
Similar Practice Questions
Harini starts from Point Y and drives 7 km towards the south. She then takes a left turn, drives 14 km. She then turns left and drives 7 km. She takes a final left turn, drives 18 km and stops at Point Z. How far (shortest distance) and towards which direction should she drive in order to reach Point Y again? (All turns are 90-degree turns only unless specified)
Harini starts from Point Y and drives 7 km towards the south. She then takes...
Manoj starts from point A and drives X km towards the south and then turns left
Manoj starts from point A and drives X km towards the south and then turns...
A boy walks 15 m north, turns right and walks 20m Again, he turns right and walks 15 m. Finally,
A boy walks 15 m north, turns right and walks 20m Again, he turns right...
At sunset, Ram and Shyam are standing in an open field and talking. Shyam’s shadow is on Ram’s left hand side. In which direction is Ram facing?
At sunset, Ram and Shyam are standing in an open field and talking. Shyam’s shadow...
A person starts from point Z and moves 7 km towards the South. He turns right and moves 5 km, turns right,
A person starts from point Z and moves 7 km towards the South. He turns...
Suraj starts driving from point A and drives 6 km towards north. Then he turns right and drives 5 km, turns right and drives 9 km. Then he turns right and drives 11 km. He takes a last right turn and drives 3 km and stops at point P. How much distance (minimum distance) and in which direction should he drive to reach point A again? (Unless specified, all turns are \(90^\circ\) turns only.)
Suraj starts driving from point A and drives 6 km towards north. Then he turns...
Ajeet starts from Point Y and drives 12 km towards the north.
Ajeet starts from Point Y and drives 12 km towards the north. He then turns...