The third cyclist covered the same distance of 60 km at a speed of 15 km / h. How long did he drive?

The cyclist moves evenly. For every hour of its movement, it drives the same number of kilometers.
We recall the formula for determining the speed of uniform movement:
V = S / t;
V – speed with uniform motion;
S – distance traveled;
t – travel time.
Let’s deduce the time from the formula and find its value:
t = S / V = 60 km / 15 km / h = 4 hours.
Answer: the cyclist traveled for 4 hours.