SSC GD Constable previous year question
3/5 of a journey is covered at a speed of 84 km/hr and the remaining distance is covered at a speed of 56 km/hr. What is the average speed (in km/hr) during the whole journey?
Asked in SSC GD Constable 2025: 11 Feb 2025 Shift 2 (Afternoon) · Quantitative Aptitude
Tap an option to check your answer.
Show answer and explanation
Correct answer: (A) 70
For distance D: time1 = (3D/5)/84 = D/140, time2 = (2D/5)/56 = D/140; total time = D/70; average speed = D ÷ (D/70) = 70 km/hr.
हिंदी में प्रश्न
एक यात्रा का 3/5 भाग 84 km/hr की चाल से तय किया जाता है तथा यात्रा की शेष दूरी 56 km/hr की चाल से तय की जाती है। पूरी यात्रा के दौरान औसत चाल (km/hr में) कितनी है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 70
दूरी D के लिए: समय1 = (3D/5)/84 = D/140, समय2 = (2D/5)/56 = D/140; कुल समय = D/70; औसत चाल = D ÷ (D/70) = 70 km/hr।
More solved Quantitative Aptitude questions
- Roopali scored double the marks in Maths compared to Science. Her total marks in Maths, Science and Computer are 234. If the ratio of her…
- A bus travels 60 km covering the distance from city P to Q in 45 minutes and returns to city P at a speed of 40 km/hr. What was the…
- In a class, in an English exam of 50 marks, the average score of 20 students was 40 marks, of 25 students was 34 marks, and of 15 students…
- If the difference between compound interest and simple interest on a sum for 3 years at 10% per annum is ₹124, find the principal (in ₹).
- If a shopkeeper offers a scheme of "buy five, get one free", find the effective discount percentage (correct to two decimal places).
- Vijay has ₹1218. He divided it between his sons Ajay and Prakash and asked them to invest it at a 10% per annum compound interest rate. It…