#### Answer

$16$ years

#### Work Step by Step

A person who has a blood relative 95 or older will stretch his/her lifespan by 10 years.
The number that represents this is $10$.
A person who has less than 12 years of education shrinks his/her lifespan by 6 years.
The number that represents this is $-6$.
Thus, the difference between the lifespan of the two is:
$=10 - (-6) = 10+6=16$