A train is moving at a speed of 80 km/hr and covers a certain distance in 4.5 hours. The speed of the train to cover the same distance in 4 hours is :

A. 100 km/hr

B. 70 km/hr

C. 85 km/hr

D. 90 km/hr

Answer: Option D

Solution(By Examveda Team)

In the first situation,
⇒ Total distance covered by train :
= 80 × $$4\frac{1}{2}$$
= 360 kms
⇒ Therefore,
The speed of the train to cover the same distance 360 km in 4 hours is :
$$\eqalign{ & = \frac{{360}}{4}\left\{ {{\text{Speed }} = \frac{{{\text{Distance }}}}{{{\text{Time}}}}} \right\} \cr & = 90{\text{ km/h}} \cr} $$