A person is 80 years old in 490 and only 70 years old in 500 in which year is he born?
Choose one
A) 400
B) 550
C) 570
D) 440
E) 450
490(80),500(70),510(60),520(50),530(40),540(30),550(20),560(10),570(0)   ANSWER:570
<result>C</result>
A person is 80 years old in 490 and only 70 years old in 500 in which year is he born?