Sachin is younger than Rahul by 7 years. If their ages are in the respective ratio of 7 : 9, how old is Sachin?

A. 16 years B. 18 years
C. 28 years D. 24.5 years

• lets make this simple ..let rahul age be x
  
  so sachin will be = x-7
  
  now whenever you get ratio you put them as division like this 7/9 ..
  
  so
  
  x-7 7
  --- = ---
  x 9
  The above representation may be looks like something rubbish after i submit..so i will make a simple explanation for above thing..
  
  x-7/x=7/9 (This is what i made exactly above)
  
  solving x we get x=31.5
  
  and question is for sachin and now we do x-7 = 31.5(which is x ) - 7 = 24.5
  
  
  answer is D.24.5 years.
• 12 years agoHelpfull: Yes(6) No(2)
• suppose ages are 7x and 9x, then 9x-7x=7 yrs
  2x=7
  x=7/2 yrs
  
  age of sachin = 7x=7*3.5 =24.5 yrs ...option D
• 12 years agoHelpfull: Yes(2) No(1)
• let age of sachin is x then the age of Rahul is x-7.
  then x/(x-7)=7/9
  then x=24.5
• 12 years agoHelpfull: Yes(1) No(1)
• Let Rahul's age be x, then Sachin's age will be x-7 years. As given (x-7)/x=7/9.
  Solving for x we get Sachin's age = 24.5
• 12 years agoHelpfull: Yes(0) No(1)