This one is tricky - math riddle

Discussion in 'Off Topic Chat' started by SquarePeg, Mar 28, 2020.

  1. SquarePeg

    SquarePeg hear me roar Staff Member Supporting Member

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    352C0620-2335-405C-A8AD-C5809F603C4F.jpeg

    One guess only.

    update
    Petrochemist was the first to get the correct answer!


     
    Last edited: Mar 29, 2020
  2. dxqcanada

    dxqcanada Been spending a lot of time on here!

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    3x=30 ... x=30/3 .. x=10
    2y+x=20 ... 2y+10=20 ... 2y=20 -10 ... 2y=10 ... y=10/2 ... y=5
    2z+y=13 ... 2z=13-5 ... 2z=8 ... z=8/2 ... z=4
    x+y*z= ... 10+5*4= ... 10+20=30
     
    Last edited: Mar 28, 2020
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  3. SquarePeg

    SquarePeg hear me roar Staff Member Supporting Member

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    sorry that is incorrect
     
  4. limr

    limr Moderator Staff Member Supporting Member

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    15?
     
  5. johngpt

    johngpt Been spending a lot of time on here!

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    14
     
  6. RowdyRay

    RowdyRay Been spending a lot of time on here!

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    19
     
  7. Space Face

    Space Face No longer a newbie, moving up!

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    19 is what I get too.
     
  8. vintagesnaps

    vintagesnaps Been spending a lot of time on here!

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    19...
     
  9. petrochemist

    petrochemist TPF junkie!

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    Not difficult at all IMO, except we're tricked into thinking the last line is all additions (which would be 19)
    @dxqcanada is correct, as multiplication is done before addition unless brackets are used.
     
    Last edited: Mar 29, 2020
  10. Space Face

    Space Face No longer a newbie, moving up!

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    Ah, so 60 then. Well spotted.
     
  11. Original katomi

    Original katomi TPF Supporters Supporting Member

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    17
    Shoe 10
    Boy 5
    1 peg/scarf 2
    Ok you got me, brackets? Whooosh as it goes right over my head lol added that I miss read question in the first place .da
     
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  12. Space Face

    Space Face No longer a newbie, moving up!

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    30
     

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