The age of the father 10 years ago was thrice the age of his son. Ten years hence, father’s age will be twice
that of his son. The ratio of their present ages is Choose the correct choice from the following options:	A) 5 : 2	B) 7 : 3	C) 9 : 2	D) 13 : 4	E) 1:2
let x be present age of father and y be present age of son   then   ten yrs before   x-10=3(y-10)-------&gt;i   ten yrs hence   x+10=2(y+10)-------&gt;ii   now   (i)-(ii)=x-10-x-10=3y-30-2y-20   =20=y-50   =30=Y   therefore x=70   Ratio   x:y   =7:3 answer : 7 : 3
<result>B</result>
The age of the father 10 years ago was thrice the age of his son. Ten years hence, father’s age will be twice
that of his son. The ratio of their present ages is