Sunday, 25 May 2014

HUMBLE PIE

Yesterday I posted a story which amounted to some personal boasting about my superb competence in solving complex navigation problems using spherical trigonometry.
Today I was brought down to earth when I encountered a trivial mathematical problem that I can not explain. Here it is:-

A farmer who was a horse breeder, died leaving 3 sons to inherit his estate.

In his will he had stated:-
“I want to leave all my horses to my 3 sons, and because they have contributed to the farm to different extents, I want them distributed as follows:-
My eldest son should get 1/2 (half) of total horses;
My middle son should be given 1/3rd (one-third) of the total horses;
My youngest son should be given 1/9th (one-ninth) of the total horses.”

After his death, the boys discovered that there were 17 horses on the farm, and they could see that it was  impossible to divide 17 into half, or 17 by 3, or 17 by 9.
So they decided to go to a farmer friend who they considered quite smart, to see if he could help them solve this problem.

The farmer friend read the will patiently, and after giving due thought, he went home and brought one of his own horses over and added it to the 17. That increased the total to 18 horses.
Now, he divided the horses according to their fathers Will.
Half of 18  = 9. So he gave the eldest son 9 horses.
1/3rd of 18 = 6. So he gave the middle son 6 horses.
1/9th of 18 = 2. So he gave the youngest son 2 horses.

This added up to a total of 17 horses,  so the farmer friend took his own horse back to his farm, and everyone was happy - problem Solved!


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