Back in 1952, Jill was only half Bill's age. But by 1966, the year the two married each other, Jill was three-quarters Bill's age. With those two clues in mind:

What year was Bill born?

What year was Jill born?

How much of Bill's age is Jill currently (in 2008)?

HERE is the answer.

THE ANSWER:

Bill was born in 1938, and Jill in 1945. Today, Bill is 70 and Jill is 63, so Jill is currently nine-tenths Bill's age.