Mr. Das 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 Rs. 150/. The sum of two age of the elder son and one son is 15. The difference of the age of sons is 3 & 2. Then what of the age of the elder son?

• a-b=3
  b-c=2
  add these two we get------>a-c=5........(1)
  either a+b=15......(2a)
  or a+c=15........(2b)
  
  using equation (1) and (2b) we get as....
  
  a=10
  b=7
  c=5
• 13 years agoHelpfull: Yes(34) No(8)
• a+b=15
  a-b=3
  solve this eq.
  a=9
  b=6
  and b-c=2
  c=4
• 13 years agoHelpfull: Yes(6) No(2)
• as per given data, x+y=15
  x-y=3
  x-y-z=2(solvin 1st & 2nd giv 9,6 each for x and y)
  nowsub these 2 in 3rd eqn gives z=1. Thus max of these is 9. hence 9 is te ans!!
• 13 years agoHelpfull: Yes(3) No(3)
• i think its 9,6,4resp
• 13 years agoHelpfull: Yes(2) No(6)
• ans is 6........consider the age diff of eldest and middle is 3 and v consider sum of elder and middle as 15 den by simultaneous eqn vil get elder as 6
• 13 years agoHelpfull: Yes(2) No(6)
• i think it is 9,6,4
• 13 years agoHelpfull: Yes(2) No(1)
• let the elder son age is X, and the youngest one is Z,
  since
  X+Z=15,
  &
  X-Y=3
  &
  Y-Z=2
  
  solving above 3eq we get X=10 ans
  
• 13 years agoHelpfull: Yes(1) No(5)
• a=x+3 age year
  b=x year
  c=x-2 year
  a+b=15
  x=6 so age of elder son=6 year
• 13 years agoHelpfull: Yes(0) No(9)