Question

After 12 years i shall be 3 times as old as i was 4 years ago

Answer 1

let your age be x
given that,x+12=3(x-4)
               x+12=3x-12
                12+12=3x-x
              24=2x
therefore,x=12

Answer 2

Answer:

Let x = your current age

 "after 12 years i shall be 3 times as old i was 4 years ago"

       (x+12)          =        3   *                 (x-4)

 x+12 = 3(x-4)

x + 12 = 3x - 12             [distribute]

 12 = 2x - 12                 [subtract x from both sides]

 24 = 2x                   [add 12 to both sides]

  12 = x                [divide both sides by 2]

 

Your current age is 12.

 Check:

 Is   (12+12) = 3(12-4)   ?

           24    = 3(8)   ?

            24  =  24   ?yes

Step-by-step explanation:

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