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Activity Discussion Math Linear Equations


  • Linear Equations

    Posted by Nayani on June 22, 2023 at 4:46 pm

    Five years ago, A was thrice as old as B. After ten years, A will be twice as old as B. What is the present ages A and B?

    Budhaditya replied 3 months, 1 week ago 2 Members · 1 Reply
  • 1 Reply
  • Budhaditya

    June 22, 2023 at 5:00 pm
    Not Helpful

    Let the present age of A be “x” years and B be “y” years.

    A. T. P

    x-5= 3(y-5)…. 1

    x+10= 2(y+10)….. 2

    x-5= 3y-15…. From 1

    x-3y= -10…….3

    x+10= 2y+20……. From 2

    x-2y= 10…. 4

    On solving eq. 3 and 4, we get

    x= 50


    Therefore, the present age of A is 50 years and B is 20 years.

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