Question

Из двух городов расстояние между которыми 240 км одновременно навстречу друг другу выехали грузовик и велосипедист через 3 часа они встретились найдите скорость велосипедиста если известно что скорость грузовика 60 км/ч

Answer 1

1)240:3=80км\ч-скорость сближения.
2)80-60=20км\ч-скорость велосипедиста.

Answer 2

Пусть х скорость велопесидиста тогда их скорость сближения равна 60+х
уравнение:
240/(60+х)=3
60+х=80
х=20км/ч
ОТВЕТ 20 км/ч

Answer 3

Problem Analysis

We are given that the distance between two cities is 240 km. A truck and a cyclist start traveling towards each other from these cities at the same time. After 3 hours, they meet each other. We need to find the speed of the cyclist, given that the speed of the truck is 60 km/h.

Solution

Let's assume the speed of the cyclist is x km/h. Since the truck and the cyclist are traveling towards each other, their combined speed is the sum of their individual speeds. Therefore, the combined speed is 60 + x km/h.

We know that distance = speed × time. After 3 hours, the truck and the cyclist meet each other, so the total distance traveled by both of them is 240 km. We can set up the equation:

240 = (60 + x) × 3

Now, let's solve this equation to find the speed of the cyclist.

Calculation

240 = (60 + x) × 3

Dividing both sides of the equation by 3: 80 = 60 + x

Subtracting 60 from both sides of the equation: x = 80 - 60 x = 20

Answer

The speed of the cyclist is 20 km/h.

Explanation

The speed of the truck is given as 60 km/h, and the speed of the cyclist is found to be 20 km/h. When they travel towards each other, their combined speed is 60 + 20 = 80 km/h. After 3 hours of traveling, the total distance covered by both of them is 80 km/h × 3 hours = 240 km, which matches the given information.