Question

Решите пожалуйста. Из двух сёл одновременно навстречу друг другу выехали велосипедист и пешеход. Пешеход шёл со скоростью 3 км/ч что в 4 раза меньше скорости велосипедиста Найдите расстояние между сёлами , если велосипедист и пешеход встретились через 3 часа после начала движения

Answer 1

Расстояние между селами 45 км:
1) 3×4=12
2) 12+3=15
3) 15×3=45 км

Answer 2

3*4=12км/ч скорость велосипедиста
12+3=15км/ч скорость сближения
15*3=45км расстояние

Answer 3

Problem Analysis

We are given that a cyclist and a pedestrian start simultaneously from two villages and meet after 3 hours. The pedestrian's speed is 3 km/h, which is 4 times slower than the cyclist's speed. We need to find the distance between the villages.

Solution

Let's assume the speed of the cyclist is v km/h. Since the pedestrian's speed is 4 times slower, their speed is v/4 km/h.

We can use the formula distance = speed × time to find the distance traveled by each person.

The distance traveled by the cyclist in 3 hours is v × 3 km.

The distance traveled by the pedestrian in 3 hours is (v/4) × 3 km.

Since they meet, the sum of their distances should be equal to the total distance between the villages.

Let's solve the equation to find the value of v and then calculate the distance between the villages.

Calculation

The equation is: v × 3 + (v/4) × 3 = total distance

Simplifying the equation: 3v + (3/4)v = total distance

Combining like terms: (12/4)v + (3/4)v = total distance

Simplifying further: (15/4)v = total distance

Solving for v: v = (4/15) × total distance

Substituting the value of v in the equation: (4/15) × total distance × 3 + (1/4) × (4/15) × total distance × 3 = total distance

Simplifying the equation: (12/15) × total distance + (3/15) × total distance = total distance

Combining like terms: (15/15) × total distance = total distance

Simplifying further: total distance = total distance

This means that the total distance between the villages is equal to the total distance between the villages. Therefore, the distance between the villages can be any value.

Answer

The distance between the villages cannot be determined based on the given information. It can be any value.