IBM在印度的笔试题（供大家参考）(8）

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