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| Q.4 | The average speed of a train running at a speed of 30 km/h during the first 100 km, at the speed of 40 km/h during the second 100 km and at the speed of 50 km/h during the last 100 km is nearly ________. | |
| Ans | 1. 39.2 km/h | |
| 2. 40.2 km/h | ||
| 3. 37.5 km/h | ||
| 4. 38.3 km/h |
Correct Ans: 4
