The rider was driving at a speed of 12 km / h and was on the way for 3 hours. How long will it take to cover

The rider was driving at a speed of 12 km / h and was on the way for 3 hours. How long will it take to cover the same distance for the crossing, the speed of which is 6 km / h.

To solve, we use the formula S = V * t, where S is the path, V is the speed, and t is the travel time:
Since the distance is the same, we will find how much the rider traveled: S = 12 * 3 = 36 km.
Let us express the time it takes for a pedestrian to walk these 36 km: t = S / V.
Then at a speed of 6 km / h the pedestrian will walk 36/6 = 6 hours.
Our answer: six hours.