Math Riddle: A large truck is crossing a bridge 1 mile long. The bridge can only hold 14000 lbs, which is the exact weight of the truck. The truck makes it halfway across the bridge and stops. A bird lands on the truck. Does the bridge collapse?
Answer: The correct answer is No, it does not collapse.
Because it has driven a half-mile – you would subtract the gas used from the total weight of the truck.