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DecentNabeel

  • one year ago

please help me

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  1. anonymous
    • one year ago
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    what is the question

  2. DecentNabeel
    • one year ago
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    Consider multiple people in a band 10 play the flute 11 play the recorder 14 player the guitar 3 play all the instrument 20 player only one instrument how many play exactly 2 instrument

  3. DecentNabeel
    • one year ago
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    @beastieman21

  4. anonymous
    • one year ago
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    @nincompoop

  5. MrNood
    • one year ago
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    |dw:1439658080442:dw| start here

  6. MrNood
    • one year ago
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    you need 11 more guitars 7 more flutes 8 more recorders total 26 - but only 20 of those fit in one of the the 'single instrument' categories

  7. DecentNabeel
    • one year ago
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    mean 6 is the answer .. @MrNood

  8. DecentNabeel
    • one year ago
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    @ganeshie8 @Miracrown

  9. ganeshie8
    • one year ago
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    |dw:1439714394819:dw|

  10. ganeshie8
    • one year ago
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    You're given : ``` a+b+d+3 = 10 a+c+e+3 = 11 b+c+f+3 = 14 d+e+f = 20 ``` and you need to find out `a+b+c`

  11. ganeshie8
    • one year ago
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    Easy, add up the first 3 equations : a+b+d+3 = 10 a+c+e+3 = 11 b+c+f+3 = 14 --------------------- 2(a+b+c) + d+e+f + 9 = 35 2(a+b+c) + d+e+f = 26 2(a+b+c) + 20 = 26 2(a+b+c) = 6 a+b+c = 3

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