A is three times as old as B. C was twice-as old as A four years ago. In four years' time, A will be 31. What are the present ages of B and C ?

A. 9, 46
B. 9, 50
C. 10, 46
D. 10, 50

• ans B. 9, 50
  
  B = x
  A = 3x-4
  c = 6x-4
  so. given A=3x-4 = 31
  after 4 year A=3x = 31 -4 =27
  B= x = 9
  c = 6*9 -4 = 50
• 11 years agoHelpfull: Yes(5) No(5)
• a=3b;
  c-4=2(a-4);
  a+4=31;
  a=27;
  sub in above u get 9,50
• 9 years agoHelpfull: Yes(0) No(0)
• A=3B
  4 years ago,,, s sub 4
  C-4=2(A-4);
  After 4 years
  A+4=31;
  A=27;
  sub in above u get 9,50.
• 9 years agoHelpfull: Yes(0) No(0)