Answer: 750 km

Solution:

distance covered in 8 hours = [tex]\frac{400}{8}\\[/tex]

                                                =50 km

distance covered in 15 hours = 15 x 50

                                                  =750km

Answer:

If a bus covers a distance of 400 km in 8 hours, its speed is:

Distance ÷ Time = 400 km ÷ 8 hours = 50 km/hour

If the bus travels at the same speed for 15 hours, the distance it will cover is:

Distance = Speed × Time = 50 km/hour × 15 hours = 750 km

Therefore, the bus will cover a distance of 750 km in 15 hours at the same speed.