Across- country runner runs 10 km in 40 minutes. what is his average speed

The average speed of the runner is 0.25 km/min and this can be determined by using the formula of the speed.

Given :

A cross-country runner runs 10 km in 40 minutes.

The following steps can be used in order to determine the average speed:

Step 1 - The formula of speed can be used in order to determine the average speed.

Step 2 - The formula of speed is given below:

where D is the distance and t is time.

Step 3 - According to the given data, a cross-country runner runs 10 km in 40 minutes.

Step 4 - Substitute the values of the known terms in the above formula of speed.

Step 5 - Simplify the above expression.

s = 0.25 km/min

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answer: i dont know but if you try hard you will get it right : )

step-by-step explanation:

391.6 is the correct answer