Question

Скорость лодки в течении 28 км / ч, скорость течения 1 км / ч. Если лодка идет 3 часа против течения и 4 часа против течения, создайте выражение и найдите значение для расчета расстояния.​

Answer 1

Ответ:

s=28-1=27÷(3+4)=3км

либо 27÷3=7км

Answer 2

Calculation of Distance Traveled

To calculate the distance traveled by the boat, we need to consider its speed and the speed of the current. Given that the boat is traveling at a speed of 28 km/h and the current is flowing at a speed of 1 km/h, we can calculate the distance traveled by the boat in different scenarios.

Let's break down the problem into two parts:

1. Boat traveling against the current for 3 hours: - In this scenario, the boat is moving against the current, so its effective speed will be the difference between the boat's speed and the current's speed. - The effective speed of the boat is 28 km/h - 1 km/h = 27 km/h. - The distance traveled by the boat in 3 hours is calculated by multiplying the effective speed by the time: distance = speed × time = 27 km/h × 3 hours = 81 km.

2. Boat traveling with the current for 4 hours: - In this scenario, the boat is moving with the current, so its effective speed will be the sum of the boat's speed and the current's speed. - The effective speed of the boat is 28 km/h + 1 km/h = 29 km/h. - The distance traveled by the boat in 4 hours is calculated by multiplying the effective speed by the time: distance = speed × time = 29 km/h × 4 hours = 116 km.

Therefore, the total distance traveled by the boat in both scenarios is 81 km + 116 km = 197 km.

Note: The above calculations assume that the speed of the boat and the current remain constant throughout the entire duration of the journey.