Three years ago, the average age of A, B and C was 27 years and that of B and C, 5 years ago was 20 years. A's present age is :

a. 30 yrs
b. 35 yrs
c. 40 yrs
d. 48 yrs

• Option C.40
  
• 10 years agoHelpfull: Yes(0) No(0)
• Ans: C 40yrs
  Let present ages of be A,B,C
  Before three years their ages were A-3,B-3,C-3 respectively
  Given
  (A-3+B-3+C-3)/3 = 27
  A+B+C=90
  Then (B-5+C-5)/2=20
  B+C=50
  A=90-(B+C)
  A=90-50
  A=40
• 10 years agoHelpfull: Yes(0) No(0)
• total age of a,b,c at present is 27*3 + 9 =90.
  total age of b,c at present is 20*2 + 10 = 50.
  so the present age of a is 90 - 50 = 40.
• 5 years agoHelpfull: Yes(0) No(0)