本文探讨了一辆从A地出发向B地行驶的汽车，在发动机出现问题后改变速度的情况。通过对不同故障点导致到达时间延迟的分析，计算出汽车的初始速度及两地之间的距离。
If a car starts from A towards B with some velocity.
Due to some problem in the engine after travelling 30km, the car goes with
4/
5 th of its actual velocity
The car reaches B 45 min later to the actual time.
If the car engine fails ofter travelling 45km, the car reaches the
destinatio
n B 36min late to the actual time
What is the initial velocity of car and what is the distance between A and
B
in km
Due to some problem in the engine after travelling 30km, the car goes with
4/
5 th of its actual velocity
The car reaches B 45 min later to the actual time.
If the car engine fails ofter travelling 45km, the car reaches the
destinatio
n B 36min late to the actual time
What is the initial velocity of car and what is the distance between A and
B
in km
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