Advanced MathHardTwo years of 5% decline
Advanced Math practice question
A lake's fish population of 2,000 falls by 5% each year. What is the population after 2 years?
Answer: 1805
2,000 × 0.95² = 1,805.
Common wrong answers
- If you answered 1710
- 1710 uses 0.95 × 0.9.
- If you answered 1800
- 1800 subtracts 100 twice, ignoring compounding.
- If you answered 1900
- 1900 is after one year.
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