Question

the present age of sonu is 1/3rd of his fathers present age. after 4 years the sum of their ages will be 60 years. the present age of sonu is

Answer 1

let present age of the father be x.then,
sonu's age be 1/3x.
after 4 years
sonu's age be 1/3x + 4
father's age be x +4
ATQ
( 1/3x + 4 ) + (x + 4) = 60
=>1/3x + 4 + x + 4 = 60
=>4/3x + 8 = 60
=> 4/3x = 52
=> x = 52 × 3/4
=>x = 39 years
sonu's age= 1/3 × 39
= 13 years

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Answer 2

Answer:

let present age of the father be x.then,

sonu's age be 1/3x.

after 4 years

sonu's age be 1/3x + 4

father's age be x +4

ATQ

( 1/3x + 4 ) + (x + 4) = 60

=>1/3x + 4 + x + 4 = 60

=>4/3x + 8 = 60

=> 4/3x = 52

=> x = 52 × 3/4

=>x = 39 years

sonu's age= 1/3 × 39

= 13 years