Multiple choice general knowledge math & puzzles One brick is one kilogram and half a brick heavy.What is the weight of one brick? 2KG 3KG 1KG 1.5KG Reveal answer Fill a bubble to check yourself A Correct answer Explanation Letting the weight of the brick be x, the equation is x = 1 + 0.5x. Solving for x yields 0.5x = 1, which means x = 2 kg. Distractors like 1.5 kg or 3 kg fail this basic algebraic balance.