Question

Задача:Корабль Синдбада-Морехода плыл со скоростью 40км/ч к берегц острова Чика-Чики и находился в 400 км от него,когда птица Рух вылетела со скоростью 70км/ч от того же берега навстречу кораблю.Долетев до корабля,она сразу же полетела обратно к берегу и,долетев до берега,сново полетела к кораблю. И так летала от корабля к берегу и обратно, пока корабль не причалил к берегу. Сколько километров "налетала" птица Рух, пока корабль не пристал к берегу острова Чика-Чики?

Answer 1

Кораблю, чтобы пристать к берегу, понадобилось плыть 10 часов: (400 км : 40 км/ч = 10 часов). И все это время птица Рух летала и летала между ним и берегом. А поскольку скорость птицы нам известна, то нетрудно выяснить, сколько она пролетела за 10 часов: 70 км/ч х 10 ч = 700 км.

Answer 2

40*Т + 70*Т + 80 = 840
110 * Т = 760
Т ~ 6,91 часа = 6 часов 54 минуты 36 секунд

Answer 3

Problem Analysis

In this problem, we are given the speed of Sindbad the Sailor's ship and the distance between the ship and the island of Chika-Chiki. We are also given the speed of a bird named Ruh, which flies towards the ship and then back to the island repeatedly until the ship reaches the island. We need to determine the total distance covered by the bird Ruh during this process.

Solution

To solve this problem, we can calculate the time it takes for the ship to reach the island and then use that time to calculate the distance covered by the bird Ruh.

Let's start by calculating the time it takes for the ship to reach the island.

The formula to calculate time is:

Time = Distance / Speed

Given: - Speed of the ship = 40 km/h - Distance between the ship and the island = 400 km

Using the formula, we can calculate the time it takes for the ship to reach the island:

Time = 400 km / 40 km/h = 10 hours

Now that we know it takes 10 hours for the ship to reach the island, we can calculate the distance covered by the bird Ruh.

The bird Ruh flies towards the ship at a speed of 70 km/h. Since the bird flies towards the ship and then back to the island repeatedly until the ship reaches the island, the total distance covered by the bird is twice the distance between the ship and the island.

Distance covered by the bird Ruh = 2 * Distance between the ship and the island

Substituting the given distance value:

Distance covered by the bird Ruh = 2 * 400 km = 800 km

Therefore, the bird Ruh covers a distance of 800 km while flying from the ship to the island and back repeatedly until the ship reaches the island of Chika-Chiki.

Answer

The bird Ruh covers a distance of 800 km while flying from the ship to the island and back repeatedly until the ship reaches the island of Chika-Chiki.