CUET Preparation Today
Aman goes from A to B at a speed of 40 km/h. Using the same route, he comes back from B to A, at a speed of 55 km/h. What is his approximate average speed for the whole journey? |
47.5 km/h 48.11 km/h 46.32 km/h 46.24 km/h |
46.32 km/h |
Average speed = \(\frac{2 ×S1 × S2}{S1 + S2}\) = \(\frac{2 × 40 × 55 }{40 + 55 }\) = 46.2157 km/h = 46.32 km/h ( approx) |
