The difference between the ages of two of my three grandchildren is 3. My eldest grandchild's age is three times than the age of my youngest grandchild and my eldest grandchild's age is two years more than the ages of my two youngest grandchildren added together. How old is my eldest grandchild?
15
12
13
10

• youngest be x , then eldest = 3x.
  3x = y + x + 2 => y = 2x -2
  so ages are 3x , 2x-2 and x respectively.
  also difference between two of the child's ages is 3
  so 2x-2 -x = 3=> x = 5 , so 3x = 15
  hence option 3
• 13 years agoHelpfull: Yes(16) No(3)
• only 2 r d possibilities i.e 12 n 15 bcz only dese r divisible by 3..but if ans is 12 den ages must b 12,4 n 7 but dis do not fulfills d criteria therefore
  ans is a
  as if ans is "a" den dere ages r 15,5 n 8 which satisfies d condition..
  
• 13 years agoHelpfull: Yes(4) No(2)