How fast should a boy ride a bicycle if he has covered one kilometer in 4 minutes?

We know from the problem statement that the boy covered a distance of 1 kilometer in 4 minutes. In order to find the speed with which the boy was moving, we need to use the formula to find the distance traveled with a constant speed and without acceleration:

S = V * t

Where S is the path traveled,
V – speed,
t is time.

Let us express the speed from this formula and get:

V = S / t

Substitute our values and get:

V = S / t = 1/4 = 0.25 kilometers per minute

We get that the boy was moving at a speed of 0.25 kilometers per minute.