The ratio of ages of A and B at present is 2:3. After five years the ratio of their ages will be 3:4 What is the present age of A in years?

a) 10
b) 15
c) 25
d) 30
e) None of the above

• 10 yrs option A
• 8 years agoHelpfull: Yes(6) No(2)
• ( 2x+5 ) /( 3x+5) = 3/4
  or, 8x+20=9x+15
  or,x=5
  So, A = 2x+5 = (2*5)+5 = 15 (b)
• 8 years agoHelpfull: Yes(4) No(13)
• when ratios are of same difference like 2:3 and 3:4 then we need to multiple that difference with given year; so i is difference multiply with 5=====1*5=5;and they asked A age 2*5=10.
• 8 years agoHelpfull: Yes(4) No(0)
• ( 2x+5 ) /( 3x+5) = 3/4
  or, 8x+20=9x+15
  or,x=5
  So, Present age of A = 2x = (2*5) = 10
• 8 years agoHelpfull: Yes(2) No(3)
• 10:15
  A age is 10
• 8 years agoHelpfull: Yes(1) No(0)
• option a 10 years
• 8 years agoHelpfull: Yes(0) No(0)
• Present age ratio are: 2x 3x
  after 5 years, (2x+5)/(3x+5)=3/4
  x=5
  A's age is= 10 (A)
• 8 years agoHelpfull: Yes(0) No(0)
• let 2x,3x be present ages,then after 5years their ages are 2x+5,3x+5
  given 2x+5:3x+5=3:4
  by solving x=5,then their present ages are 10,15(2x,3x)
• 7 years agoHelpfull: Yes(0) No(0)
• 10 assume a/b=10/15 and after 5 year a/b=3/4 so its following the guessed answer
• 7 years agoHelpfull: Yes(0) No(0)
• a)10
  present age ratio
  A/B=2/3 ----------------------------------------(i)
  After 5 years ages will be A+5 and B+5
  given A+5/B+5=3/4 -------------------------------(ii)
  on solving equation i and ii we get A=10
• 6 years agoHelpfull: Yes(0) No(0)