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Andrew is 33 years old. One third of 33 is 11:

33 × 1/3
= 33/3
= 11

Now, the distance in years between 11 and 33 can be calculated accordingly:

33 - 11 = 22

Therefore, 22 years ago Betty was 1/3 of Andrew's age. Which means Betty hadn't been born yet.
Wouldn't the answer be 8 years ago since it's asking how many years ago
was Betty's age 1/3 so Andrews and Andrew was 33 and 1/3 of 33 is 11, it's basically asking how many years ago was Betty 11
years old.

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