One grandfather has three grandchildren, two of their age difference is 3, eldest child age is 3 times youngest child's age and eldest child's age is two times of sum of other two children. What is the age of eldest child?

• All 3 conditions can't be satisfied. Not possible. Thanks.
• 14 years agoHelpfull: Yes(15) No(1)
• 18
• 14 years agoHelpfull: Yes(12) No(10)
• YOUNGEST CHILD AGE AS X THEN ELDEST CHILD IS 3X AND 3X=2(X+M),TAKE A-B=3,B-C=3,C-A=3 THEN WE WILL FIND ANS FROM OPTIONS
  
• 14 years agoHelpfull: Yes(3) No(5)
• 4
  
• 14 years agoHelpfull: Yes(1) No(20)