Bisi news 5 km from school she works 1 km at 4 km per hour and travels the rest of the way by a bus at 16 km per hour what is the average speed for the whole distance
To find the average speed for the whole distance, we need to calculate the total time taken for both parts of the journey and then divide the total distance by the total time.
First, let's calculate the time it takes for Bisi to walk 1 km at a speed of 4 km/h:
Time = Distance / Speed
Time = 1 km / 4 km/h = 0.25 hours
Now, let's calculate the time it takes for Bisi to travel the remaining 5 km by bus at a speed of 16 km/h:
Time = Distance / Speed
Time = 5 km / 16 km/h ≈ 0.3125 hours
The total time taken for the whole distance is the sum of the walking time and the bus travel time:
Total Time = 0.25 hours + 0.3125 hours = 0.5625 hours
Finally, let's calculate the average speed for the whole distance:
Average Speed = Total Distance / Total Time
Average Speed = 6 km / 0.5625 hours ≈ 10.67 km/h
Therefore, the average speed for the whole distance is approximately 10.67 km/h.