16Hit1600
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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