-
A person travels 600 km by train at 80km/hr, 800 km by ship at 40 km/hr 500 km by aeroplane at 400 km/hr and 100 km by car at 50km/hr. What is the average speed for the entire distance ?
-
-
65 5 km./hr. 123 - 60 km./hr.
-
60 5 km./hr. 123 - 62 km./hr.
-
Correct Option: A
| Total time = | + | + | + | ||||
| 80 | 40 | 400 | 50 |
| = | hours. | |
| 8 |
| Average speed = | |||||
| 8 | |||||
| = | |
| 246 |
| = 65 | km/hr. | |
| 123 |
