To calculate the time it will take for the bus to cover the same distance at a different speed, we can use the formula:
Time = Distance / Speed
In this case, the distance covered by the bus is the same, so we can consider it a constant value. Let's denote it as 'D'. The speed at which the bus initially covered the distance is 60 km/h, and the speed at which we want to calculate the time is 80 km/h.
Using the formula, we can calculate the time it will take to cover the distance at 80 km/h:
Time = D / Speed
Time = D / 80 km/h
Since the distance is constant, we can simplify the equation:
Time = (D / 60 km/h) * (80 km/h / 1)
We know that the initial time taken to cover the distance at 60 km/h is 3 hours, so we can substitute that value:
Time = (3 hours) * (80 km/h / 60 km/h)
Simplifying further:
Time = (3 hours) * (4/3)
Time = 4 hours
Therefore, it will take 4 hours to cover the same distance at a speed of 80 km/h.