Question

Школьники отправились в поход, прошли 23 километра. Первые три часа они шли со скоростью 4 км/ч, затем сделали остановку. Остальную часть пути они прошли за 2 часа. С какой скоростью шли школьники после остановки?

Answer 1

1)Рассчитываем расстояние, пройденное  со скоростью 4 км/ч:
4*3=12 км
2)23-12=11
3)11/2=5.5 км/ч

Answer 2

Calculation of Speed After the Stop

To calculate the speed at which the students walked after the stop, we need to determine the distance they covered during the first three hours and the remaining distance they covered in the next two hours.

Given: - Total distance covered: 23 kilometers - Time spent walking at a speed of 4 km/h: 3 hours - Remaining time spent walking: 2 hours

To find the distance covered during the first three hours, we multiply the speed (4 km/h) by the time (3 hours): Distance = Speed × Time = 4 km/h × 3 hours = 12 kilometers

To find the remaining distance covered in the next two hours, we subtract the distance covered during the first three hours from the total distance: Remaining Distance = Total Distance - Distance Covered in First Three Hours = 23 kilometers - 12 kilometers = 11 kilometers

Now, we can calculate the speed at which the students walked after the stop by dividing the remaining distance by the remaining time: Speed = Remaining Distance / Remaining Time = 11 kilometers / 2 hours = 5.5 km/h

Therefore, the students walked at a speed of 5.5 km/h after the stop.