Bicycle wheel circumference 1.4 / 5m, for 1 sec. The wheel makes 1.2 / 3 turns. How far a cyclist will travel in 5 minutes.

This task can be completed by action. First, let’s translate 5 minutes into seconds. It is known that 1 min = 60 s. Then:
1) 5 * 60 = 300 s
Now let’s calculate how many revolutions the wheel will make in 300 s:
2) 1 whole 2/3 * 300 = (3/3 + 2/3) * 300 = 5: 3 * 300 = 5 * 100 = 500 revolutions
We will calculate the distance. We multiply the wheel circumference by the number of revolutions in 5 minutes:
3) 1 whole 4/5 * 500 = (5/5 + 4/5) * 500 = 9: 5 * 500 = 9 * 100 = 900 m
Answer: the cyclist will travel 900 meters.