A person is 80 years old in 490 and only 70 years old in 500 in which years is…
2025
A person is 80 years old in 490 and only 70 years old in 500 in which years is he born ?
- A.
720
- B.
440
- C.
360
- D.
570
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Correct answer: D
Answer: 570
Key idea: In BC (Before Christ), larger year numbers are earlier in time. To find age at a given BC year, subtract that year from the birth year.
Step 1: Let the birth year be B. Given that in year 500 the person is 70, compute B − 500 = 70, so B = 570.
Step 2: Verify for year 490: 570 − 490 = 80, which matches the given age of 80.
Conclusion: The person was born in 570 BC.