Question

A father's age is thrice the sum of ages of his two children. After 5 years his age will be twice

the sum of the ages of his two children. Find the present age of the father.

Answer 1

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Let the sum of two son's be “y” years.

Then father's age will be 3y,

After 5 years,

(y+5)=(3y+5),

But it is given that,

2 (y+5)=(3y+5),

2y +10=3y+5,

3y-2y=10+5,

y=15.

Hence,the father age is 15.

Then his son's age will be 2½ & 2½.