The odds against a husband who is 45 years old, living till he is 70 are 7 ∶ 5 and the odds against his wife who is now 36, living till she is 61 are 5 ∶ 3. The probability that at least one of them will be alive after 25 years is:
1
\(\frac{61}{96}\)
2
\(\frac{5}{32}\)
3
\(\frac{11}{16}\)
4
\(\frac{3}{8}\)