6.2. Two cyclists decided to travel from point $A$ to point $B$. The speed of the first one is 35 km/h, and the second one's speed is 25 km/h. It is known that each of them only cycled when the other was resting (standing still), and in total, they covered the same distance in 2 hours. Could they have reached point $B$, located 30 km from point $A$, within 2 hours?
Answer: Could not.

Solution: We will assume that the cyclists did not rest simultaneously. Since they covered the same distance, and the ratio of their speeds is 7:5, the time of movement for the first cyclist is 5 parts, and for the second cyclist - 7 parts of time. In total, they rode for 2 hours = 120 minutes. Therefore, one part of time is 10 minutes. Consequently, the second cyclist rode for 70 minutes = 1 hour 10 minutes. In one hour, he covered 25 km, and in 10 minutes - 1/6 of 25 km, which is less than 1/6 of 30 km, that is, less than 5 km. In total, he covered less than 30 km.

Comment: A correct answer without justification - 0 points.