Advanced MathEasy–MediumGrowth factor over several hours
Advanced Math practice question
A bacterial culture grows by a factor of 4 every hour. By what factor does the culture grow over 3 hours?
Answer: 64
Three hourly factors of 4 multiply: 4 × 4 × 4 = 64.
Common wrong answers
- If you answered 12
- 12 adds the factors instead of multiplying.
- If you answered 16
- 16 uses only two hours.
- If you answered 81
- 81 uses 3 as the factor and 4 as the number of hours.
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