Saved Bookmarks
| 1. |
A driver travels to a place 150 km away at anaverage speed of 50 km/hr and return at30 km/hr. His average speed for the whole journeyin km/hr is |
|
Answer» Average speed will be =2xy/(x+y)km/hr =2(50)(30)/(50+30)km/hr = 37.5 km/hr |
|