මේ ගාණ හදන්න උදව්වක් දෙන්නකෝ please

anf

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Jan 13, 2011
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මේ ගාණ හදන්න උදව්වක් දෙන්නකෝ please

TWO NUMBERS ARE IN THE RATIO 2:4 .WHEN 8 IS ADDED TO EACH THEY ARE IN THE RATIO 10:13. FIND THE TWO NUMBERS
 

kosandpol

Well-known member
  • Jun 10, 2008
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    YES ANSWER IS CORRECT
    this is how I got it.
    Assume the numbers are x and y.

    x:y = 2:4
    x/y = 2/4
    so y=2x

    (x+8) : (y+8) = 10:13
    (x+8) / (y+8) = 10/13

    since y = 2x :
    (x+8)/(2x+8)=10/13
    13(x+8)=10(2x+8)
    13x+104 = 20x+80
    104-80 = 20x-13x
    7x = 24
    x = 24/7
    x = 4

    since y = 2x,
    y = 2*4
    y = 8
     

    sachith19920726

    Well-known member
  • Jan 20, 2011
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    Crynet Solutions

    djHiran

    Well-known member
  • Oct 6, 2006
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    USA
    HELP OKKOTAMA THANKS. BUT ANSWER EKA THAMA HAMBUNE NAA

    Take a look at this

    this is how I got it.
    Assume the numbers are x and y.

    x:y = 2:4
    x/y = 2/4
    so y=2x

    (x+8) : (y+8) = 10:13
    (x+8) / (y+8) = 10/13

    since y = 2x :
    (x+8)/(2x+8)=10/13
    13(x+8)=10(2x+8)
    13x+104 = 20x+80
    104-80 = 20x-13x
    7x = 24
    x = 24/7
    x = 4

    since y = 2x,
    y = 2*4
    y = 8
     

    gunemalli

    Member
    Oct 13, 2009
    342
    53
    0
    Sheffield, United Kingdom
    this is how I got it.
    Assume the numbers are x and y.

    x:y = 2:4
    x/y = 2/4
    so y=2x

    (x+8) : (y+8) = 10:13
    (x+8) / (y+8) = 10/13

    since y = 2x :
    (x+8)/(2x+8)=10/13
    13(x+8)=10(2x+8)
    13x+104 = 20x+80
    104-80 = 20x-13x
    7x = 24
    x = 24/7
    x = 4

    since y = 2x,
    y = 2*4
    y = 8

    HELP OKKOTAMA THANKS. BUT ANSWER EKA THAMA HAMBUNE NAA

    wtf ? why is that ??


    මචං උඹේ ක්‍රමේ හරි හැබැයි අන්තිම සුළු කිරීම පොඩ්ඩක් වැරදි. මෙන්න අන්තිම උත්තර දෙක.
    x= 24/7
    y= 48/7

    24/7≠4 මෙන්න මෙතැනයි උඹ වැරැද්දගත්තේ.