Question

Решите задачу. Катер сначала плыл 2ч. со скоростью 24км/ч.а потом 3ч. по озеру со скоростью на 4 км/ч меньше. сколько всего километров проплыл катер по реке и по озеру. С пояснением.

Answer 1

2×24=48 км в 2 ч поплыл катер
3×(24-4)=60 км в 3 ч поплыл катер
48+60=108 км поплыл катер
Ответ: 108 км поплыл катер

Answer 2

Сначала он проплыл 2*24=48 км
потом по озеру 24-4=20км/ч его скорость
20*3=60км
48+60=108 км всего проплыл по озеру и реке 

Answer 3

Problem Analysis

We are given that a boat first travels for 2 hours with a speed of 24 km/h and then travels for 3 hours on a lake with a speed 4 km/h less than the previous speed. We need to find the total distance traveled by the boat on the river and the lake.

Solution

To find the total distance traveled by the boat, we need to calculate the distance traveled on the river and the distance traveled on the lake separately.

Let's start by calculating the distance traveled on the river. We can use the formula `distance = speed * time` to calculate the distance. The speed on the river is given as 24 km/h, and the time is given as 2 hours. Substituting these values into the formula, we get:

Distance on the river = 24 km/h * 2 hours = 48 km

Next, let's calculate the distance traveled on the lake. The speed on the lake is 4 km/h less than the speed on the river. So, the speed on the lake is 24 km/h - 4 km/h = 20 km/h. The time spent on the lake is given as 3 hours. Using the formula `distance = speed * time`, we can calculate the distance traveled on the lake:

Distance on the lake = 20 km/h * 3 hours = 60 km

Finally, we can find the total distance traveled by adding the distance on the river and the distance on the lake:

Total distance traveled = Distance on the river + Distance on the lake = 48 km + 60 km = 108 km

Therefore, the boat has traveled a total distance of 108 km on the river and the lake.

Answer

The boat has traveled a total distance of 108 km on the river and the lake.