Q: Why did Klutz lift off a manhole cover and dive in?
A: He was committing sewercide.
This is a riddle used in math worksheets answered by solving math equations.
Check out this math worksheet (page 3) to get the answer to the title question.
Students work problems in order to discover the punch line of a joke or riddle, decode a humorous poem or one-liner, create an interesting picture, etc. Thus, the solution is a built-in reward to the student when he or she completes the puzzle.
So, practice your skills with the help of this publication: Pre-Algebra with Pizzazz, authored by Steve and Janis Marcy.