Question

in 12 years M will be thrice as old as N was 12 years ago if M is now 8 year older than N the present age of N is ?​

Answer 1

Answer:

Let the present age of B be x years. ,  

Then, the present age of A would be (x+9) years.

After 10 years, the age of A would be (x+9+10)=(x+19) years and before then years, the age of B was (x−10) years.  

Now, from the information given in the question,  

(x+19)=2(x−10)

or x+19=2x−20 or x=19+20=39 years

Therefore, the present age of B is 39 years.

Step-by-step explanation: