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One brick is one kilogram and half a brick heavy. What is the weight of one brick?

One brick weighs 2 kilograms.

Why this works

This riddle plays with a clever equation. Let's break it down: if we let the weight of one brick be represented as "B," the riddle states that "one brick is one kilogram and half a brick heavy." We can express this as the equation B = 1 kg + 0.5B. To solve for B, we can rearrange the equation: if we subtract 0.5B from both sides, we get 0.5B = 1 kg, which leads us to conclude that B = 2 kg. The trick lies in recognizing that "half a brick" adds a layer of complexity that makes the solution more engaging!

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Common Wrong Answers

“1 kilogram”

This guess assumes that the brick is only its own weight, not accounting for the additional half brick mentioned in the riddle.

“3 kilograms”

This guess incorrectly adds weight by misinterpreting the relationship between the brick's weight and the half brick, rather than solving the equation.

“2.5 kilograms”

This guess is a miscalculation that arises from misunderstanding the equation set up by the riddle, leading to an incorrect average.

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