An airplane climbs at a rate of 66.8 feet per minute. It descends at twice the rate that it climbs. Assuming it descends at a constant rate, how many feet will the airplane descend in 30 minutes?
  1. 96.8
  2. 133.6
  3. 1,002
  4. 2,004
  5. 4,008
Explanation
Answer: E - 4,008
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