Ответ:

  1. 200 · 0.05 = 10.
  2. 12 / 400 = 0.03.
  3. 9 / 0.03 = 300.
  4. (0.4 · 10) / 200 = 4 / 200 = 0.02.
  5. 150 · 0.04 = 6.
  6. 10 / 0.05 = 200.