A cross country runner runs 12km in 41 minutes. What is his average speed?
speed = distance / time
12km/41min = .2926 km/min = 17.56 km/hr
To find the average speed of the cross country runner, you can use the formula:
Average Speed = Distance / Time
Given that the runner runs 12 kilometers in 41 minutes, we can substitute these values into the formula:
Average Speed = 12 km / 41 min
To simplify the units, you can convert minutes to hours since both distance and time need to have the same units:
Average Speed = 12 km / (41/60) hours
To divide by a fraction, you can multiply by the reciprocal:
Average Speed = 12 km * (60/41) hours
Now, we can calculate it:
Average Speed = 17.56 km/h
Therefore, the average speed of the runner is approximately 17.56 km/h.
To find the average speed, we divide the total distance covered by the time taken.
The runner runs 12 kilometers in 41 minutes, so to find the average speed, we divide 12 km by 41 minutes.
Average Speed = Total Distance ÷ Time Taken
Average Speed = 12 km ÷ 41 minutes
To simplify, you can convert minutes into hours as follows: 41 minutes ÷ 60 minutes/hour = 0.683 hours.
Average Speed = 12 km ÷ 0.683 hours
Now, divide the distance by time to find the average speed:
Average Speed = 17.557 km/hr
Therefore, the average speed of the runner is 17.557 km/hr.