A life insurance table indicates that a woman who is now A years old can expect to live E years longer. Suppose that A and E are linearly related and that E = 50 when A = 24 and E = 20 when A = 60.
a. At what age may a woman expect to live 30 years longer?
b. What is the life expectancy of a newborn female child?
c. At what age is the life expectancy zero?