Question

The age of the father is twice the sum of the ages of his two children .After 20 yrs his age will be equal to the sum of the ages of his children.....Find the age of the father.....


PLs solve it:-):-):-)

Answer 1

Let the fathers age be x yrs
the sum of ages of 2 children be (a+b)yrs
according to 1st condition
x=2(a+b)=2a+2b.....(1)
according to 2nd condition
x+20=a+20+b+20
x+20=a+b+40

x=a+b+20.....(2)
equating (1) & (2) 
a+b=20
sub this in(1)
x=40
therefore the fathers age is 40 yrs.

hope it helps u