RPF Constable previous year question
A 270 m long train crosses a man walking at 5 km/h in the opposite direction in 21 seconds. Find the speed of the train (km/h).
Asked in RPF Constable 2025: Shift 28 · Quantitative Aptitude
Tap an option to check your answer.
Show answer and explanation
Correct answer: (B) 41.3 km/h
Relative speed = 270/21 = 12.86 m/s. Train speed = relative speed + man's speed = 11.47 m/s = 41.3 km/h.
हिंदी में प्रश्न
270 मीटर लंबी एक ट्रेन 5 किमी/घंटा की चाल से विपरीत दिशा में चल रहे एक व्यक्ति को 21 सेकंड में पार करती है। ट्रेन की चाल (किमी/घंटा) ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 41.3 km/h
सापेक्ष चाल = 270/21 = 12.86 मी/से। ट्रेन की चाल = 41.3 किमी/घंटा।
More solved Quantitative Aptitude questions
- 11 men can complete a piece of work in 12 days. In how many days can 16 women complete the same work, if 11 men and 16 women have the same…
- The length of a rectangular field is twice its breadth. If the breadth is 22 m, find the perimeter of the field.
- In an election with only two candidates, the winner got 55% of the total 10200 votes polled. Find the winning margin (in votes).
- Find the rate percent per annum if Rs 12500 amounts to Rs 13950 in 2 years at compound interest (compounded annually).
- The perimeter of an equilateral triangle PQR is 24 cm. What is the area of the triangle (in sq cm)?
- In a race, an athlete covers a distance of 560 m in 66 sec in the first lap. If he maintains the same speed, how much time will he take to…