Question

Перший пішохід за 5 год пройшов 16,2 км. Яку відстань пройшов другий пішохід за 4 год, якщо його швидкість на 1,2 км/год більша ?

Answer 1

1) 16,2 : 5 = 3,24 (км/ч) - скорость первого пешехода;

2) 3,24 + 1,2 = 4,44 (км/ч) - скорость второго пешехода;

3) 4,44 · 4 = 17,76 (км) - пройдёт второй пешеход за 4 ч.

Выражение: (16,2 : 5 + 1,2) · 4 = 17,76.

Вiдповiдь: 17 км 760 м.

Answer 2

#### Calculation of the Distance Covered by the Second Pedestrian To calculate the distance covered by the second pedestrian, we need to know the speed at which they were walking. According to the given information, the second pedestrian's speed is 1.2 km/h faster than the first pedestrian's speed. Let's assume the speed of the first pedestrian is **x** km/h. Therefore, the speed of the second pedestrian would be **x + 1.2** km/h. The formula to calculate distance is: **Distance = Speed × Time** For the first pedestrian, we are given that the time taken is 5 hours and the distance covered is 16.2 km. Using the formula, we can calculate the speed of the first pedestrian: **16.2 km = x km/h × 5 hours** Simplifying the equation, we get: **16.2 km = 5x km/h** Solving for **x**, we find: **x = 16.2 km / 5 hours** Now that we know the speed of the first pedestrian, we can calculate the speed of the second pedestrian: **Speed of second pedestrian = x + 1.2 km/h** Substituting the value of **x**, we get: **Speed of second pedestrian = (16.2 km / 5 hours) + 1.2 km/h** Now, we can calculate the distance covered by the second pedestrian using the speed and time given: **Distance covered by second pedestrian = (Speed of second pedestrian) × (Time taken by second pedestrian)** Substituting the values, we get: **Distance covered by second pedestrian = [(16.2 km / 5 hours) + 1.2 km/h] × 4 hours** Let's calculate the distance covered by the second pedestrian: **Distance covered by second pedestrian = [(16.2 km / 5 hours) + 1.2 km/h] × 4 hours** Using the given values, we can calculate the distance covered by the second pedestrian.