A train covers of 225 km in $2\frac{1}{2}$ hours ar a uniform speed. The time taken by the train (in hours) to cover a distance of 630 km at the speed is :

7

Distance = Speed × Time

According to question ,

Speed = \(\frac{225}{2.5}\) = 90 km/h

Now , Time taken by train to cover 630 km with same speed =

= \(\frac{630}{90}\) 

= 7 hours