Question

В гости к другу Коля ехал 2 часа на велосипеде со скоростью 10 км в час. Обратно он пошел пешком со скоростью 5 км в час. Сколько времени Коля потратил на обратный путь?

Answer 1

1) 10х2=20(км)-составляет путь к другу
2) 20:5=4(ч)
Ответ: Коля потратил на обратный путь 4ч.

Answer 2

1). 2*10=20 (км) весь путь; 2). 20:5=4 (ч) потратил на обратный путь. ОТВЕТ: Коля потратил на обратный путь 4 часа.

Answer 3

Calculation of Time Spent on the Return Journey

To calculate the time spent by Kolya on the return journey, we need to determine the distance he traveled and divide it by his walking speed.

Given: - Kolya traveled to his friend's house on a bicycle at a speed of 10 km/h for 2 hours. - Kolya returned home on foot at a speed of 5 km/h.

To find the distance traveled, we can use the formula: distance = speed × time.

Let's calculate the distance traveled on the bicycle: - Speed: 10 km/h - Time: 2 hours

Using the formula, we get: distance = 10 km/h × 2 hours = 20 km.

Now, let's calculate the time spent on the return journey: - Distance: 20 km - Speed: 5 km/h

Using the formula, we get: time = distance / speed = 20 km / 5 km/h = 4 hours.

Therefore, Kolya spent 4 hours on the return journey.

Please note that the above calculations are based on the given information and assume a constant speed throughout the journey.