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SASMO 2021 Grade 5 Question 10

SASMO · SASMO 2021 Grade 5

Question 10

Alison is 30 years older than Bernard. Last year, Bernard was 20 years older than Caitlyn. Next year, Caitlyn will be 10 years older than Donald. The sum of their four ages was 180 years five years ago. How old is Alison now?
  1. 25 years old
  2. 35 years old
  3. 55 years old
  4. 85 years old
  5. None of the above