Enigma 1325: Sum letters
From New Scientist #2484, 29th January 2005
I have just written down five different two-figure numbers:
• my age
• my house number
• the sum of those first two numbers
• the difference between those first two numbers
• half of one of those first four numbers
However, I have written the names of the numbers in words rather than use figures. Surprisingly, each of the five numbers has precisely the same number of letters in its name.
What were the last three numbers?