The average age of three friends A, B, C is 20 years. The average age of A and B is 19 years, then what is the age of C?
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Q:
The average age of three friends A, B, C is 20 years. The average age of A and B is 19 years, then what is the age of C?
- 120 yearsfalse
- 221 yearsfalse
- 322 yearstrue
- 424 yearsfalse
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