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iTiaax

  • 3 years ago

*MEDAL WILL BE AWARDED* The average of 5 numbers is 12. If a 6th number is added, what is the average?

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  1. ZeHanz
    • 3 years ago
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    You'll have to know what number is added!

  2. iTiaax
    • 3 years ago
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    Really? :(

  3. TedG
    • 3 years ago
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    i was going to say, without the 6th number you cant do it

  4. ZeHanz
    • 3 years ago
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    Try it with an example: The average of 12, 12, 12, 12 and 12 (5 numbers) is ...12! Now add 12. Average is still 12. Instead, add 60. Average is 120/6=20. Makes a lot of difference.

  5. tcarroll010
    • 3 years ago
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    If "x" is your 6th number, your average is:\[\frac{ 60 + x }{ 6 }\]This gives a real and useful answer, but of necessity has to be left in the form of a formula.

  6. tcarroll010
    • 3 years ago
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    In case that Latex didn't come through: (x + 60) / 6

  7. tcarroll010
    • 3 years ago
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    "60" is from: (x1 + x2 + x3 + x4 + x5)/5 = 12, so the sum is 60 for the first 5 numbers.

  8. tcarroll010
    • 3 years ago
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    Making sense now, @iTiaax ?

  9. iTiaax
    • 3 years ago
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    Yes :) Thank you so much

  10. tcarroll010
    • 3 years ago
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    You're quite welcome!

  11. tcarroll010
    • 3 years ago
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    And thx for the recognition! @iTiaax ! Good luck in all of your studies!

  12. iTiaax
    • 3 years ago
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    No problem :) Good luck to you too!

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