Estimation question

How much does a school bus weigh?

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What this question tests

Physical estimation skills using known reference points and basic component reasoning.

How to approach it

  1. Break the bus into major components: chassis and body frame, engine, seats, and wheels.
  2. Reference a known comparison: a typical car weighs roughly 1.5 tons, and a school bus is much larger and built with heavier steel framing.
  3. Estimate the empty (curb) weight based on size, roughly 7 to 8 times a car's mass given the extended steel frame and larger engine, landing near 10 to 12 tons.
  4. Cross check against a known reference: full-size buses are commonly cited as weighing around 10 to 12 tons empty (common knowledge approximate range).
  5. Adjust for passenger capacity if asked for loaded weight, adding roughly 2 to 3 tons for a full 40 to 70 seat load.
  6. State a final empty weight estimate, roughly 10 to 12 tons, noting the assumption clearly.

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