Advanced MathEasy–MediumGrowth by 50% twice
Advanced Math practice question
A puppy weighed 12 kilograms at the start of a year and its weight grew by 50% in each of the next two half-years. What was its weight, in kilograms, at the end of the year?
Answer: 27
12 × 1.5 × 1.5 = 27.
Common wrong answers
- If you answered 18
- 18 is after ONE half-year.
- If you answered 24
- 24 adds 50% of 12 twice (linear); the second 50% is of 18.
- If you answered 36
- 36 triples the weight (12 × 3).
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