Question

Кенгуру без остановок бежал 3 ч со скоростью 45 км/ч.После короткого отдыха он побежал со скоростью 36 км/ч. Сколько времени потратил кенгуру на вторую часть пути,если весь путь равен 207 км?

Answer 1

1) 3 • 45 = 135 ( км ) составляет первая часть пути ; 2) ( 207 - 135 ) : 36 = 2 ( часа ) время на вторую часть пути ; Ответ 2 часа

Answer 2

45*3=135 км - 1 часть пути
207-135=72 км - 2 часть пути
72/36=2 ч  потребовалось на 2 часть пути

Answer 3

Calculation of the Time Taken by the Kangaroo

To calculate the time taken by the kangaroo for the second part of the journey, we need to determine the distance covered in the first part of the journey.

Given: - The kangaroo ran without stopping for 3 hours at a speed of 45 km/h. - After a short rest, the kangaroo ran at a speed of 36 km/h. - The total distance of the journey is 207 km.

To find the distance covered in the first part of the journey, we can use the formula:

Distance = Speed × Time

Let's calculate the distance covered in the first part of the journey:

Distance = Speed × Time Distance = 45 km/h × 3 hours Distance = 135 km Now, we can calculate the distance covered in the second part of the journey:

Total Distance - Distance Covered in the First Part = Distance Covered in the Second Part 207 km - 135 km = 72 km

To find the time taken for the second part of the journey, we can use the formula:

Time = Distance / Speed

Let's calculate the time taken for the second part of the journey:

Time = Distance / Speed Time = 72 km / 36 km/h Time = 2 hours

Therefore, the kangaroo spent 2 hours on the second part of the journey.