Question 1165707: Please help me about this problem. Roni is 30 years old and Grace is 22 years old. How many years ago was Roni twice as old as Grace? Answer by ikleyn(52788) (Show Source):
The difference in their ages is, was and will be 30-22 = 8 years.
Hence, Roni was twice as old as Grace, when Grace was 8 years old and Roni was 16 years old.
It was 22-8 = 14 years ago.
Roni was 30-14 = 16 years old then.
