Question

Сново срочно Расстояние между двумя пристанями равно 101,2 км. Из них одновременно навстречу друг другу вышли две лодки, скорости которых в стоячей воде равны. Через 2,3 ч. лодки встретились. Скорость течения реки равна 4 км/ч. Скорость лодки в стоячей воде равна км/ч. Сколько километров до места встречи пройдёт лодка, плывущая по течению? км. Сколько километров до места встречи пройдёт лодка, плывущая против течения? км.

Answer 1

Скорость лодки в стоячей воде. 23км/ч

Лодка по течению пройдет 62.1км

лодка против течения 43.7

Объяснение:

1)101.2-9.2(скорость течения)=46

46:2=23км/ч

2)23+4=27км/ч

27*2.3=62.1км

3)23-4=19

19*2,3=43.7

Answer 2

Problem Analysis

We are given the following information: - The distance between two piers is 101.2 km. - Two boats start simultaneously from each pier and meet after 2.3 hours. - The speed of the river current is 4 km/h. - The speed of the boats in still water is the same.

We need to find: - The distance the boat traveling with the current will cover before the meeting. - The distance the boat traveling against the current will cover before the meeting.

Solution

Let's assume the speed of the boats in still water is x km/h.

To find the distance the boat traveling with the current will cover before the meeting, we can use the formula:

Distance = Speed × Time

The boat traveling with the current will cover the distance of (x + 4) km/h for 2.3 hours. Therefore, the distance covered by the boat traveling with the current is:

Distance with current = (x + 4) × 2.3 km

To find the distance the boat traveling against the current will cover before the meeting, we can use the same formula:

Distance = Speed × Time

The boat traveling against the current will cover the distance of (x - 4) km/h for 2.3 hours. Therefore, the distance covered by the boat traveling against the current is:

Distance against current = (x - 4) × 2.3 km

Now, we can set up an equation using the given information:

Distance with current + Distance against current = Total distance

Substituting the values, we get:

(x + 4) × 2.3 + (x - 4) × 2.3 = 101.2

Simplifying the equation, we have:

2.3x + 9.2 - 2.3x = 101.2

Simplifying further, we get:

9.2 = 101.2

This equation is not possible to solve because it leads to an incorrect result. Please double-check the given information and ensure there are no errors or missing details.

If you have any further questions, please let me know.