SAT Math Practice Exam

Category - Mathematics - Medium

It takes 28 minutes for a certain bacteria population to double. If there are 5,241,763 bacteria in this population at 1:00 p.m., which of the following is closest to the number of bacteria in millions at 2:30 p.m. on the same day?
  1. 80
  2. 40
  3. 20
  4. 15
  5. 10
Explanation
Answer: B - 40
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