The age of man is three times the sum of the ages of his two sons.Five years hence,his age will be double of the sum of the ages of his sons.The father's present age is :	Choices.
A) 50 years B) 46 years C) 20 years D) 45 years E) 30 years
Let the sum of present ages of the two sons be x years.   then father's present age =3x years.   (3x+5)=2(x+10)   3x+5=2x+20   x=15.   Hence, father's present age =45 years.   Answer is 45 years
<result>D</result>
The age of man is three times the sum of the ages of his two sons.Five years hence,his age will be double of the sum of the ages of his sons.The father's present age is :