Advanced MathHardTwo years of 25% decline
Advanced Math practice question
A herd of 400 deer shrinks by 25% each year. How many deer will there be after 2 years?
Answer: 225
400 × 0.75² = 225.
Common wrong answers
- If you answered 100
- 100 subtracts 75% at once.
- If you answered 200
- 200 subtracts 100 twice, ignoring compounding.
- If you answered 300
- 300 is after one year.
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