A
I just did the test, is B, it can't be disproved.
A is 35 years old, B is 15 years old.
1917
Remembering that there is no year zero, it is 2412 years ago, from 2013.
As of 2016, the year 18,000 BC was 20,016 years ago.
Lyndon B. Johnson
B. Hollowell has written: 'Memories of Denton 50 years ago'
B. Coal
These years are 2260 years apart. (recall that there is no year zero. )
Dog sledding, Cross-country skiing Both A and B
2a + 2b = 160 But b = a + 40 so 2a + 2(a + 40) = 160 ie 2a + 2a + 80 = 160 or 4a = 80 ie a = 20 Then b = a + 40 gives b = 20 + 40 = 60 Solution: a = 20, b = 60