InterviewSolution
Saved Bookmarks
| 1. |
A car travels first 30 km with a uniform speed of60 km h- and then next 30 km with a uniform speedof 40 km h-I. Calculate : (i) the total time of journey,(ii) the average speed of the car. |
|
Answer» (1) Total time of journey = Distance /speed = 30/60 + 30/40 = 30(2 + 3)/120 = 30*5/120 = 1.25 hours (2) Average speed of car = (60 + 40)/2 = 100/2 = 50 km/hr |
|