In A,B,C are having some marbles with each of them. A has given B and C the same number of marbles each of them already have. Then, B gave C and A the same number of marbles they already have. Then C gave A and B the same number of marbles they already have. At the end A,B,and C have equal number of marbles.

If the total number of marbles are 72, then the number of marbles with A at the starting
(a) 20
(b) 30
(c) 32
(d) 39

• go from the end.
  at end each having equal no.of marbles.
  totally we have 72 marbles.
  so at end all are having 24,24,24.
  previous step C gave A and B the same number of marbles they already have...
  so
  A B C
  
  24 24 24
  
  if c gave same amount means in previous steps it look like
  
  12 12 48
  
  in other prev step B gave it to A and C,so it looks like
  
  6 42 24
  
  so initially A gave it to B and C
  
  39 21 12
  
  so ans is d)39
  
• 14 years agoHelpfull: Yes(171) No(12)
• (d) 39
  Initial : 39 21 12
  Next : 6 42 24
  Next : 12 12 48
  Final : 24 24 24 =>total 72 and all having equal.
• 14 years agoHelpfull: Yes(10) No(8)
• simple logic, hereinfirstcase a a has given to b and c the same number those already have i,e it must have more than the sumof both b and c in only 39 case it is possible
• 9 years agoHelpfull: Yes(7) No(0)
• A has 39 marbles, B-21, C-12 marbles
• 14 years agoHelpfull: Yes(5) No(10)
• answers 2(3y-x-z),, 39
  11)question
  given that three numbers are x,y,z
  first A given to B,C
  so B=2y
  C=2z
  A=x-y-z
  second B gives C,A
  C=4z
  A=2(x-y-z)
  B=3y-z-x
  third C gives A,B
  A=4(x-y-z)
  B=2(3y-z-x)
  C=5z-x-3y
  so ans is 2(3y-z-x)
  
  question 12
  at final A,B,C Same numers
  so 4x-4y-4z=72/3=24-------(1)
  x+y+z=72----------(2)
  solve (1) and (2)
  A at starting has 39
• 9 years agoHelpfull: Yes(3) No(1)
• finaly we have to get equal values of a b c
  total given is 72
  72/3=24 24+24+24
  c=24
  it can have only one possible solution to give is 12+12 to A and B
  i.e 12 12 48
  now b=12 it has possible of giving 6+6
  so 6 42 24
  now A=6 to give equal for both a nd b
  if A=39 and b=21 c=12
  Ans 39
• 7 years agoHelpfull: Yes(0) No(0)