pair of scissors. Each scale provides a numerical clue, and by using the information from one scale to solve the next, we can eventually discover the exact weight of the scissors.
At first, you might be tempted to guess the answer by looking at the objects. But guessing is not necessary. Every number displayed on the scales has a purpose, and the secret is to work through the clues in the correct order.
Before looking at the final result, take a moment to study the three scales and see whether