16Hit1600
Advanced MathMediumTwo triplings of a population

Advanced Math practice question

A population of 800 bacteria triples every 4 hours. What is the population after 8 hours?

Answer: 7200

800 → 2,400 → 7,200.

Common wrong answers

If you answered 2400
2400 is after 4 hours.
If you answered 4800
4800 adds 2,400 twice, as if linear.
If you answered 21600
21600 is after 12 hours.

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