Math Homework, Help!!!!
posted by Casey .
A marble statue is 39 years old and a limestone statue is 97 years old. In how many years will the limestone statue be twice as old as the marble statue?

Let the number of years be N. The marbel statue will be 39+N years old and the limestone statue will be 97+N years old.
Thus:
2(39+N)=(97+N)
Rearrange and solve for N.