Correct option is A
Given:
A horse is running at a speed of 40 km/h and covers the distance in 3 hours.
Formula Used:
Distance = SpeedTime
Solution:
Distance = 40 3 = 120 km
Speed = Distance/Time = = 48 km/h
Thus, the horse should run at a speed of 48 km/h to cover the distance in 2.5 hours.