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 :

Answer: Option D

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 :
$$\begin{array}{rl}& =\frac{360}{4}\left\{\text{Speed }=\frac{\text{Distance }}{\text{Time}}\right\}\\ & =90\text{ km/h}\end{array}$$