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Two Ten Ton Tough Elephants


Best Answer dark_magician_92, 08 May 2013 - 09:57 AM

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#1 BMAD

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Posted 08 May 2013 - 03:46 AM

Tenny and Tonny are two elephants. Every winter, Tenny gains ten percent of his body weight, and Tonny loses ten percent. Every summer, the opposite happens: Tenny loses ten percent and Tonny gains ten percent. This has gone on for ten years, and now they each weigh ten tons. How many tons did Tenny and Tonny weigh ten years ago?


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#2 bhramarraj

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Posted 08 May 2013 - 08:28 AM

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#3 bonanova

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Posted 08 May 2013 - 09:30 AM

Do the reckoned years start with winter or with summer?
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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
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#4 dark_magician_92

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Posted 08 May 2013 - 09:57 AM   Best Answer

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#5 bhramarraj

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Posted 08 May 2013 - 11:06 AM

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OOOPS....I missed the changes in summer....

I shall again post the solution.


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#6 bhramarraj

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Posted 08 May 2013 - 11:43 AM

Spoiler for revised answer


Edited by bhramarraj, 08 May 2013 - 11:52 AM.

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#7 bhramarraj

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Posted 08 May 2013 - 12:18 PM

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#8 dark_magician_92

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Posted 08 May 2013 - 01:12 PM

@brahmaraj - I may be wrong but i think there is mistake in your calculation, our answers are coming same.


Edited by dark_magician_92, 08 May 2013 - 01:12 PM.

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#9 witzar

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Posted 08 May 2013 - 02:50 PM

Do the reckoned years start with winter or with summer?

Commutativity of multiplication makes it irrelevant, I believe.


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#10 BMAD

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Posted 08 May 2013 - 04:04 PM

Do the reckoned years start with winter or with summer?

Let's assume Winter since a year starts in January.


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