I am three times as old as my son. Five years later, I shall be two an

1.	I am three times as old as my son. Five years later, I shall be two and a half timesas old as my son. How old am I and how old is my son ?
Answer» Let my present age be 3x years.=>My son's age=x years Five years later:-My age=(3x+5) yearsSon's age=(x+5) years ∴3x+5=2.5(x+5)=>3x+5=2.5x+12.5=>0.5x=7.5=>x=15 ∴My present age=3x=45 yearsSon's present age=x=15 years

I am three times as old as my son. Five years later, I shall be two and a half timesas old as my son. How old am I and how old is my son ?

Answer»

Let my present age be 3x years.=>My son's age=x years

Five years later:-My age=(3x+5) yearsSon's age=(x+5) years

∴3x+5=2.5(x+5)=>3x+5=2.5x+12.5=>0.5x=7.5=>x=15

∴My present age=3x=45 yearsSon's present age=x=15 years