The puzzle can be solved using three simple equations based on the weights shown on the scales. The mouse and fox together weigh 10 kg, the mouse and deer weigh 20 kg, while the fox and deer have a combined weight of 24 kg. These three measurements provide all the information needed to calculate the individual weights of each animal.

The first step is to add all three measurements together: 10 + 20 + 24 = 54 kg. Since each animal appears in two of the equations, the combined result counts the total weight of all three animals twice. Therefore, dividing 54 by 2 gives us 27 kg, which is the combined weight of the mouse, fox, and deer.

Now that we know their total weight, we can calculate how much each animal weighs individually. By subtracting each pair’s combined weight from 27 kg, we discover that the deer weighs 17 kg, the fox weighs 7 kg, and the mouse weighs 3 kg.

The final solution is therefore Mouse: 3 kg, Fox: 7 kg, and Deer: 17 kg. When all three weights are added together, the result is exactly 27 kg, confirming that the puzzle has been solved correctly.