Question

i am 3 times as old as my son 5 years later i shall we 2 1/2 time as old as my son how a my and how old as my son

Answer 1

2 years is your son

Answer 2

$\huge\mathfrak\red{Answer :}$


Let my age be x years and son's age be y years.

According to question;

I am (x) three times as old as my son (3y). Means;

x = 3y ......(1)

5 years later, means plus (+)

I (x) shall be two and half (1/2) times as old as my son (y).

Means;

x + 5 = 5(y + 5)/2 

x + 5 = (5y + 25)/2

2x + 10 = 5y + 25

2 (3y) + 10 = 5y + 25

6y + 10 = 5y + 25

6y - 5y = 25 - 10

y = 15 

Put value of y in (1)

x = 3y

x = 3 (15)

x = 45 

My age = x = 45years

and

Son′s age =y = 15years
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