mathematical aptitude problem?

Comments

• simishu07

  June 2021

  Hello here is solution:

  3/4x-1/3x

  Taking LCM of deno and simplifying:

  9x-4x/12 = 60

  5x=12 x 60

  x= 12 x 60/5 =12 x 12 = 144
• anonymous

  June 2021

  Therefore

  9x/4x - 1 = 180x

  Therefore

  9 - 4 = 720x

  Therefore 5 = 720x

  Therefore x = 1/144
• krunal-shah

  June 2021

  (3/4)*X - (1/3)*X = 60

  => 3X/4 - X/3 = 60

  => 9X/12 - 4X/12 = 60 ( taking L.C.M.=12)

  =>5X/12 = 60

  => 5X = 60*12

  => X = 720 / 5

  => X = 144
• josephine

  June 2021

  Common denominator is 12x

  Gives

  [9 - 4]/12x = 60

  5 = 720x

  x = 5/720 = 1/144 not 144
• leah-allen_60bb4a275d6bf

  June 2021

  3/4x-1/3x=60

  => (9x-4x)/12=60

  =>5x=60*12

  =>x=60*12/5

  =>x=12*12

  =>x=144
• anonymous

  June 2021

  3/4x - 1/3x = 60

  u need to subtract so make the denominator the same.

  9/12x - 4/12x =60

  5/12x = 60

  5=(12x X 60)

  5=720x

  720/5=x

  =144
• spiffin456

  June 2021

  Multiply everything by 12:

  9x - 4x = 720

  5x = 720

  x = 720/5

  x = 144
• thomas-davies_60bb4a28a27a9

  June 2021

  3/4(x) - 1/3(x ) = 60

  L.C.M.=12

  9/12(x) - 4/12(x) = 720/12

  9x - 4x = 720

  5x = 720

  x = 720/5 = 144
• max-watson_60bb4a294e9d2

  June 2021

  3/4x-1/3x=60

  (9x-4x)/12x^2=60

  5x/12x^2=60

  5/12x=60

  5=720x

  x=1/144