The Parade of
Legs
This problem is adapted from Van De Walle, John
(1994), Elementary School Mathematics
(2^{nd} Ed.), NY: Longman, pages 40
 41
Mary looked out of her farmhouse window and saw
a group of pigeons and donkeys passing by. She counted all the legs
of the pigeons and donkeys and found that the total number of legs
add up to 66. How many of each kind of animals (pigeons and
donkeys) passed by her window if the total number of animals is
24?
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prompt him as to what should be the next step. At the end of the
whole exercise, show him (and explain, if necessary) the different
strategies in solving the problem ... use the links
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