Question

Скорость катера по течению - 24,2 км\ч. Скорость течения - 1/11 (одна одиннадцатых) Чему равна скорость катера против течения? Маемся с сестрой, я уж позабыла данные задачи, а ей надо в школу. Помогите, пожалуйста!

Answer 1

24.2 - 1/11 = 24  2/10 - 1/11 = 24 22/110 - 10/11 = 24  12/110 км/ч - собственная скорость катера.
24  12/110 - 1/11 = 24  12/110 - 10/110 = 24  2/110 = 24  1/55 км/ч - скорость катера против течения реки. 

Answer 2

Calculation of the Boat's Speed Against the Current

To calculate the speed of the boat against the current, we need to subtract the speed of the current from the speed of the boat when there is no current. In this case, the speed of the boat in still water is given as 24.2 km/h, and the speed of the current is given as 1/11 (one eleventh) of the boat's speed.

Let's calculate the speed of the boat against the current:

Step 1: Convert the speed of the current to the same units as the speed of the boat. Since both are given in kilometers per hour, no conversion is necessary.

Step 2: Subtract the speed of the current from the speed of the boat to find the speed of the boat against the current.

The formula to calculate the speed of the boat against the current is:

Speed of the boat against the current = Speed of the boat in still water - Speed of the current

Substituting the given values:

Speed of the boat against the current = 24.2 km/h - (1/11) * 24.2 km/h

Now, let's calculate the speed of the boat against the current:

Speed of the boat against the current = 24.2 km/h - (1/11) * 24.2 km/h

Using the formula, we can simplify the expression:

Speed of the boat against the current = 24.2 km/h - (24.2/11) km/h

Calculating the expression:

Speed of the boat against the current ≈ 24.2 km/h - 2.2 km/h

Speed of the boat against the current ≈ 22 km/h

Therefore, the speed of the boat against the current is approximately 22 km/h.

Please note that the above calculation assumes that the speed of the boat and the current are constant and do not change over time.