Question

4 saal pehle A Aur B Ki Age ka Ratio 2:3 tha 4 saal baad ye ratio 5:7 ho jaiyenga...unki wartaman Age kya hogi

Answer 1

Explanation:

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Answer 2

Answer:

age ka A=x and b=y

   4 saal pehla, x-4/y-4=2/3

            (x-4)3=2(y-4)

          3x-12=2y-8

            3x-2y=4

             x=4+2y/3

    4 saal baad,  x+4/y+4=5/7

               7(X+4)=5(Y+4)

            7x+28=5y+20

          7x-5y=8

        7(4+2y)/3-5y=8

       28+14y-15y/3=8

       28-y=24

       -y=24- 28

      -y= -4

   y=4 or x=3

     

 

Explanation: