When Randolph asked Hilda how old she was, Hilda replied that in two years she would be twice as old as she was five years ago. How old is Hilda?
Aside from the potential response that it’s rude to ask the age of a lady, the answer can be worked out mathematically.
x + 2 = 2(x – 5)
x + 2 = 2x – 10
x + 12 = 2x
12 = x
In two years she’ll be 14, which is twice her age 5 years ago (7).