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Bonus Problems (for 2011 - 2012 year) | ||||
Here
are the bonus problems that I have given so far this year.
You can submit answers up to the time when I post the
solution to the solutions page.
You can discuss the problem with whoever you want, but
answers must be submitted in your own handwriting. It is
not enough to submit a number as your answer. Some
explanation of how you solved it must be provided as well. Chimps Alfred and Betty The combined ages of chimpanzees Betty and her child Alfred is 105 years. Betty is twice as old as Alfred was when Betty was as old as Alfred is now. How old are they? |