Advanced MathMediumGrowth of 20% over two periods
Advanced Math practice question
A social club has 250 members. Its membership grows by 20% each year. How many members will it have in 2 years?
Answer: 360
250 × 1.2² = 250 × 1.44 = 360.
Common wrong answers
- If you answered 300
- 300 is after ONE year.
- If you answered 350
- 350 adds 20% of 250 twice (linear); the second 20% is of 300.
- If you answered 600
- 600 multiplies by 2.4 (adding the factors).
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