The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be?
51 and 15, 24 and 42, 60 and 6
If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?
It's cheaper to take two friends at the same time. In this case, you would only be buying three tickets, whereas if you take the same friend twice you are buying four tickets.