defence exam BSF Constable (Tradesmen) 2023 Mock Test Quantitative Aptitude Speed Time and Distance Average Speed
Distance between two stations x and y is 778 km. A train covers the journey from x to y at a speed of 84 kmph and returns to x with a speed of 56 kmph. Find the average speed of the train (in kmph) for the whole journey.
1
67.2
2
70
3
68
4
72