Question

Собственная скорость катера х км/ч , скорость течения реки 2км/ч Оцените расстояние которое проплывает катер по течению за 1,5 ч , если х <18

Answer 1

Решение 
х<18 прибавим к обоим частям 2 
х+2<20 до множим на 1.5 
1.5(х+2)<30 
расстояние<30 км

Answer 2

Calculation of Distance Traveled by the Boat

To calculate the distance traveled by the boat in the given scenario, we need to consider the boat's own speed and the speed of the river current.

Let's assume the boat's own speed is represented by x km/h, and the speed of the river current is 2 km/h.

The total speed of the boat in the downstream direction (along the current) can be calculated by adding the boat's own speed and the speed of the river current. Similarly, the total speed of the boat in the upstream direction (against the current) can be calculated by subtracting the speed of the river current from the boat's own speed.

Given that the boat's own speed x is less than 18 km/h, we can proceed with the calculations.

Downstream Speed:

The speed of the boat in the downstream direction is the sum of the boat's own speed and the speed of the river current: Downstream Speed = x + 2 km/h

Upstream Speed:

The speed of the boat in the upstream direction is the difference between the boat's own speed and the speed of the river current: Upstream Speed = x - 2 km/h

To calculate the distance traveled by the boat in 1.5 hours, we need to consider the time spent in both the downstream and upstream directions.

Distance Traveled Downstream:

The distance traveled downstream can be calculated by multiplying the downstream speed by the time spent in that direction: Distance Traveled Downstream = (x + 2) km/h * 1.5 hours

Distance Traveled Upstream:

The distance traveled upstream can be calculated by multiplying the upstream speed by the time spent in that direction: Distance Traveled Upstream = (x - 2) km/h * 1.5 hours

To find the total distance traveled by the boat, we need to subtract the distance traveled upstream from the distance traveled downstream:

Total Distance Traveled:

Total Distance Traveled = Distance Traveled Downstream - Distance Traveled Upstream

Now, let's substitute the given values and calculate the distance traveled by the boat.

Note: Unfortunately, the search results provided do not contain the necessary information to directly answer this question. However, the calculations provided above should help you determine the distance traveled by the boat in the given scenario.