Answer:
Step-by-step explanation:
We know the equation,
Speed = distance / time
But here it's mentioned the average speed, so the equation can be rewritten as,
Average speed = total distance/time taken
And we get,
Total distance = average speed × time taken
So we get by substituting,
Total distance = 16km/h × (15min/60)
= 4 km
Mind that I have converted time to hours by dividing by 60.