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A programme adds \( 15 \) requirements each adding \( 20 \) kg. The total weight growth is

  • A.35 kg
  • B.150 kg
  • C.3000 kg
  • D.300 kg

Answer: D

Correct answer: 300 kg

The additions accumulate:

\[ 15 \times 20 = 300 \text{ kg} \]

Each individual 20 kg seemed negligible, which is precisely how requirements creep works. And 300 kg of equipment is not 300 kg on the aircraft: with a growth factor of two or three it becomes 600 to 900 kg of take-off weight once the structure and fuel to carry it are counted.

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