A train covers a distance of 225 km in $2\frac{1}{2}$ hours with a uniform speed. The time taken, in hours, to cover a distance of 450 km with the same speed is :

5  4 3 6

5

Distance = Speed × Time Speed = \(\frac{225}{2.5}\) = 90 km/h Time required to cover 450 km = \(\frac{450}{90}\) = 5 hours