medium · Enhanced ACT math

An environmental study found that the area of a local wetland is decreasing such that every 10 years, it loses 20% of its remaining area. If the wetland currently covers 400 acres.

What will be its area in 30 years?

  1. 256 acres
  2. 160 acres
  3. 320 acres
  4. 204.8 acres

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