Question

Легковая машина ехала 3 ч со скоростью 80 км/ч.За сколько времени проедет это расстояние велосипедист,скорость которого в 4 раза меньше?

Answer 1

1)80*3=240(км)проехала машина
2)80:4=20(кмч)скорость велосипеда
3)240:20=12(часов)нужно велосипеду.
Если помог благодарите!

Answer 2

1) 80•3=240(км.) - проехала машина
2)80:4=20(км/ч) - скорость велосипедиста
3)240:20=12(ч)
Ответ: за 12 часов

Answer 3

Problem Analysis

We are given that a car travels a distance in 3 hours at a speed of 80 km/h. We need to find out how long it would take for a cyclist, whose speed is 4 times slower, to cover the same distance.

Solution

To find the time it takes for the cyclist to cover the distance, we can use the formula `time = distance / speed`. Let's calculate the time for the cyclist.

The speed of the cyclist is 4 times slower than the speed of the car, which means the speed of the cyclist is 80 km/h divided by 4, or 20 km/h.

Now, we need to find the distance covered by the car. We know that the car traveled for 3 hours at a speed of 80 km/h. Using the formula `distance = speed * time`, we can calculate the distance covered by the car.

Let's calculate the distance covered by the car: - Distance = Speed * Time - Distance = 80 km/h * 3 hours - Distance = 240 km

Now, we can calculate the time it takes for the cyclist to cover the same distance: - Time = Distance / Speed - Time = 240 km / 20 km/h - Time = 12 hours

Therefore, it would take the cyclist 12 hours to cover the same distance that the car covered in 3 hours.

Answer

The cyclist would take 12 hours to cover the same distance that the car covered in 3 hours.