Question

Зная, что велосипедист едет 2 ч со скоростью 8 км/ч, ответь на следующие вопросы 1)Во сколько раз уменьшится скорость велосипедиста, если он проедет то же расстояние, затратив в 4 раза больше времени? 2)Во сколько раз велосипедисту нужно уменьшить скорость движения для того, чтобы проехать то же расстояние за 8 ч?

Answer 1

1) за 2 часа проехал 16 км
если будет ехать 4 часа, то 16/4=4 км/ч
8-4=4 км/ч
Ответ: на 4 км/ч
2) S- пройденный путь
S=156 км
16/8= 2 км/ч
Ответ: до 2 км/ч

Answer 2

Question 1: Во сколько раз уменьшится скорость велосипедиста, если он проедет то же расстояние, затратив в 4 раза больше времени?

To find out how much the cyclist's speed will decrease, we need to compare the time and distance in the two scenarios.

In the first scenario, the cyclist rides for 2 hours at a speed of 8 km/h. Let's calculate the distance covered in this scenario: Distance = Speed * Time = 8 km/h * 2 h = 16 km.

In the second scenario, the cyclist spends 4 times more time to cover the same distance. Let's calculate the new time: New Time = 2 hours * 4 = 8 hours.

Now, let's calculate the new speed in the second scenario: New Speed = Distance / New Time = 16 km / 8 hours = 2 km/h.

To find out how much the speed has decreased, we can calculate the ratio of the initial speed to the new speed: Speed Decrease Ratio = Initial Speed / New Speed = 8 km/h / 2 km/h = 4.

Therefore, the speed of the cyclist will decrease by a factor of 4 if they cover the same distance, but take 4 times longer to do so.

Question 2: Во сколько раз велосипедисту нужно уменьшить скорость движения, чтобы проехать то же расстояние за 8 часов?

To find out how much the cyclist needs to decrease their speed to cover the same distance in 8 hours, we can use a similar approach as in the previous question.

In the first scenario, the cyclist rides for 2 hours at a speed of 8 km/h. Let's calculate the distance covered in this scenario: Distance = Speed * Time = 8 km/h * 2 h = 16 km.

In the second scenario, the cyclist wants to cover the same distance in 8 hours. Let's calculate the new speed: New Speed = Distance / Time = 16 km / 8 hours = 2 km/h.

To find out how much the cyclist needs to decrease their speed, we can calculate the ratio of the initial speed to the new speed: Speed Decrease Ratio = Initial Speed / New Speed = 8 km/h / 2 km/h = 4.

Therefore, the cyclist needs to decrease their speed by a factor of 4 in order to cover the same distance in 8 hours.