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Showing posts with label Dividing Cows Dividing Cows (Math Brainteaser Puzzle). Show all posts
Showing posts with label Dividing Cows Dividing Cows (Math Brainteaser Puzzle). Show all posts

Sep 18, 2007

Dividing Cows (Math Brainteaser Puzzle)

When farmer Jones died he left a herd of 17 cows. In his will he gave instructions that the cows were to be divided as follows: ½ to his eldest son, Sam, 1/3 to his second son, Michael, and 1/9 to his youngest son, Benjamin. The three brothers could not see how this was possible. Luckily for them, a passing professor of mathematics heard of this problem and solved it for them. How?

Clue for the Puzzle:

Suppose there had been 18 cows, how many each would the sons have got?

Answer for the Puzzle:

The professor of mathematics suggested they add one imaginary cow before doing their division:

½ of 18 = 9

1/3 of 18 = 6

1/9 of 18 = 2

Total = 9+6+2 = 17

Curiously enough, as you can see, this adds up to 17!


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