Question

Скорость дельфина в 2 раза больше скорости акулы. Скорость акулы на 25 км/ч меньше скорости дельфина. Какова скорость каждого животного? Помогите пожалуйста. Даю шанс решить и заработать быстро 15 баллов!

Answer 1

Дельфин -2х
Акула -х на 25< чем дельфин
1)2х-х=25
Х=25 скорость акулы
2) 25*2=50 скорость дельфина

Answer 2

Dolphin and Shark Speeds

According to the information provided, the speed of a dolphin is twice that of a shark, and the shark's speed is 25 km/h less than the dolphin's speed. Let's calculate the speeds of each animal.

Let's assume the speed of the shark is represented by S km/h, and the speed of the dolphin is represented by D km/h.

Given that the speed of the dolphin is twice that of the shark, we can write the equation:

D = 2S [[1]]

We are also given that the speed of the shark is 25 km/h less than the speed of the dolphin. This can be expressed as:

S = D - 25 [[2]]

To find the speeds of both animals, we can substitute equation [[2]] into equation [[1]]:

D = 2(D - 25)

Simplifying the equation:

D = 2D - 50

Bringing the terms with D to one side:

D - 2D = -50

Simplifying further:

-D = -50

Dividing both sides by -1:

D = 50

Now that we have the speed of the dolphin, we can substitute this value back into equation [[2]] to find the speed of the shark:

S = 50 - 25

Simplifying:

S = 25

Therefore, the speed of the dolphin is 50 km/h and the speed of the shark is 25 km/h.

I hope this helps! Let me know if you have any further questions.