19.MR dash has 3 sons whose ages are respectively a,b,c. The grandfather has bought a cycle for the eldest son, mother has bought a bag for the youngest one which cost Rs150/. The sum of two age of the elder son & one son is 15.The difference of age of sons is 3 & 2.Then what is the age of the eldest son?
a)10, b)11, c) 12,d)13

• The question says the sum of two age of the elder son & one son is 15.
  
  Here elder doesn't mean eldest.
  
  Take option 2:
  eldest son's age=11
  then,
  11-2=9(elder son)
  9-3=6(youngest son)
  now check ..
  it satisfies the statement "the sum of two age of the elder son & one son is 15."(9+6=15)
  So,correct ans should be 11.
• 12 years agoHelpfull: Yes(15) No(32)
• if take 11 then check condition all three ::
  11-3=8,8-2=6,8+6=14,11+6=17,ans is wrong.
  
  take 10 then
  case 1 :: 10-3=7,7-2=5,10+5=15.
  case 2 :: 10-2=8,8-3=5,10+5=15.
  10 is ans.
• 12 years agoHelpfull: Yes(13) No(6)
• 10 is the answer
• 12 years agoHelpfull: Yes(7) No(12)
• Take option 1
  10 - 3 = 7
  7 - 2 = 5
  And we get
  10 + 5 = 15
  So answer is option 1
• 12 years agoHelpfull: Yes(6) No(7)
• sum is 15 that is a+c=15------>1
  and a-b=3,b-c=2.add them,then we get a-c=5------->2
  by adding them we get a=10.
• 12 years agoHelpfull: Yes(6) No(1)
• a=eldest son;b=elder son;c=younger son;
  b+c=15;__________(1).
  case a: a-b=3_____(2a) & b-c=2____(2b)| case b: a-b=2_____(3a) & b-c=3____(3b)
  solving equ(1) and(2b) we get |solving equ(1) and(3b) we get
  b=17/2 (not possible) | b=9;and c=6;a=11;
  while considering the differences of ages a-c can also be thought of
  but can be eleminated by using the option as they are 2 digit and the sum
  of the ages of b and c is 15 so they should be single digit in order to keep
  the difference 2 and 3
• 11 years agoHelpfull: Yes(4) No(1)
• a=eldest son;b=elder son;c=younger son;
  b+c=15;__________(1).
  case a: a-b=3_____(2a) & b-c=2____(2b))
  solving equ(1) and(2b) we get
  b=17/2 (not possible)
  
  case b: a-b=2_____(3a) & b-c=3____(3b)
  solving equ(1) and(3b) we get
  b=9;and c=6;a=11;
  while considering the differences of ages a-c can also be thought of
  but can be eleminated by using the option as they are 2 digit and the sum
  of the ages of b and c is 15 so they should be single digit in order to keep
  the difference 2 and 3
• 11 years agoHelpfull: Yes(2) No(3)
• ans is 10
  assum that a=x,b=x-3 nd c=x-5(bcoz diff between eldest nd youngst child)
  so, there r 2 possibilities.(1)x+(x-3)=15 (2) x+(x-5)=15
  bt ans of (1) is 9 where ans of (2) is 10 ..
  so 10>9
  so eledest son's age is 10 years
• 10 years agoHelpfull: Yes(1) No(1)
• 10 is the answer.option a
• 3 years agoHelpfull: Yes(0) No(0)