A is 4 yrs old and B is thrice A>when A is 12 yrs, how old will B be?

16 20 24 28

• 20...
  
  when A is 4 years B is 3*4=12 years
  when A is 12 years after 8 years from now...
  so then B is 12+8=20 years...
• 12 years agoHelpfull: Yes(48) No(7)
• a=4
  b=3*4=12
  now age of a is 12yrs
  i.e after 8 yrs..
  b= 8+12=20ans
• 12 years agoHelpfull: Yes(28) No(4)
• A is 4 years old.
  B is thrice A,so B=3A
  B=12
  A is 12 years old that means A is getting 12 years after 8 years,so after 8 years B can have 20 years.so answer is 20
• 12 years agoHelpfull: Yes(13) No(1)
• Ans : 20
  Hint : A=4 ,B=12
  A=12,B=12+8=20
• 12 years agoHelpfull: Yes(9) No(4)
• ANS : 28
  EXPLANATION:
  Present Age of A=4yrs
  When A is 12 yrs i.e. after 8 yrs(12-4)
  (B + 8) = 3 x 12 = 3 x (A + 8)
  B = 36 - 8 = 28
• 12 years agoHelpfull: Yes(8) No(33)
• ANS IS :: 28
  
  when A is 12 years B is Thrice So,B=3(A)..So B=36 when A is 12.
  Similar B is 28 when A is 4 because age difference is 24.
• 12 years agoHelpfull: Yes(7) No(31)
• A=4:
  B=3A;
  So B=3*4 at prst =12
  When A 12 means 12-4 =8 I.e after 8 yrs so B age is 12+8=20
• 8 years agoHelpfull: Yes(0) No(0)