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Currently, I am 9 times as old as my son. Next year, I will be 6 times as old as my son. How old is my son now?

 Jun 21, 2022
 #1
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Let your the current age of your son =  N

Then your current age =  9N

 

And in one year we have this relationship

 

9N + 1  =   6 ( N + 1)        simplify

 

9N + 1  = 6N + 6

 

9N - 6N  =  6 - 1

 

3N  = 5

 

N =  5/3    =   1 + 2/3  yrs old  =   1yr  and  8 months old =  your son's age now

 

 

cool cool cool

 Jun 21, 2022
 #2
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The son is 1-2/3 years old.  

 

9 times 1-2/3 years is 15 years, i.e., the father's age now.  

 

But the son is over a year old now, which means

the father was at most 14 when his son was born. 

Guest Jun 21, 2022

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