How will the distance change if the speed increases by 4 times, and the time remains the same?

The distance traveled will increase as many times as the speed has increased (in our case, 4 times).

Example:

Let’s take the speed of an ordinary walking person at 5 km / h. Let’s take 1 hour.

Further, let’s imagine that a person and a cyclist (the cyclist’s speed is 4 times higher, that is, 20 km / h) moved in the same direction at the same time.

During this time (for an hour), we will see that a cyclist and a pedestrian at distances:

Cyclist: 20 km.

Pedestrian: 5 KM.

20/5 = 4 times.

Answer: the distance will increase by 4 times.