16Hit1600
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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