Question

Из двух портов,расстояние между которыми равно 83 км,одновременно в противоположных направлениях вышли два теплохода. Скорость первого теплохода равна 32 км/ч. Через 4 часа расстояние между ними было равно 355 км. Сколько километров проплыл второй теплоход? С какой скоростью он плыл?

Answer 1

355-83-4*32=144км прошел второй теплоход
скорость=144\4=36 км в час

Answer 2

Problem Analysis

We are given that two ships start simultaneously from two ports that are 83 km apart. The first ship has a speed of 32 km/h. After 4 hours, the distance between the two ships is 355 km. We need to find the distance traveled by the second ship and its speed.

Solution

Let's denote the distance traveled by the second ship as d km and its speed as v km/h.

To find the distance traveled by the second ship, we can use the formula:

Distance = Speed × Time

For the first ship, the distance traveled after 4 hours is:

355 km = 32 km/h × 4 h

Simplifying the equation, we find that the first ship has traveled 128 km.

Since the two ships are moving in opposite directions, the total distance between them is the sum of the distances traveled by each ship. Therefore, we can write the equation:

83 km = 128 km + d km

Simplifying the equation, we find that the distance traveled by the second ship is 83 km - 128 km = -45 km.

However, distance cannot be negative, so we can conclude that the second ship has not traveled any distance. This means that the second ship has not moved from its initial position.

To find the speed of the second ship, we can use the formula:

Speed = Distance / Time

Since the second ship has not traveled any distance, its speed is 0 km/h.

Answer

The second ship has not traveled any distance and its speed is 0 km/h.

Explanation

The first ship has traveled a distance of 128 km in 4 hours, while the second ship has not moved from its initial position. Therefore, the second ship has not traveled any distance and its speed is 0 km/h.