Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is:

A.
2 : 5
B.
3 : 5
C.
4 : 5
D.
6 : 7

• third no. is x
  first no./second no.
  =(x+x*20/100)/(x+x*50/100)
  =(120*x/100)/(150*x/100)
  =4/5
• 13 years agoHelpfull: Yes(13) No(1)
• formula used for it is...A/B={(100+x)/(100+y)}%
  where x=20%, y=50% and A,B are those nos.
  so, A/B=(120/150)*100%=80%=80/100=4/5
  ratio=4:5
  
• 13 years agoHelpfull: Yes(3) No(1)
• assume that the third number = x
  given that first number is 20% more than third number, therefore first number = x+(x*20/100) = x+x/5=6x/5
  second number is 50% more than third number, therefore second number = x+(x*50/100) = x+x/2=3x/2
  The ratio of 2 numbers is (6x/5):(3x/2)=12:15
  =4:5
• 13 years agoHelpfull: Yes(2) No(1)
• option A. 2:5 is correct.
  let the nos. be x,y and z. according to question, x=(1/5)z, y=(1/2)z hence x/y=2/5...i.e. x:y=2:5.
  
• 13 years agoHelpfull: Yes(2) No(0)
• x+x/5/x+x/2===6x/5/3x/2=4/5 ans
• 13 years agoHelpfull: Yes(1) No(2)
• (x+x/5)/(Y+y/2)=1 then y:x=4:5
• 13 years agoHelpfull: Yes(0) No(1)
• Let 3rd nmbr be 100.so 2nd and 3rd are 120 and 150 respectively
  120/150=4/5
• 10 years agoHelpfull: Yes(0) No(0)
• let 3rd number =x
  then 1st number=x+x*20%=12x/10
  and secon number=x+x*50%=15x/10
  so ratio of two number=4:5
• 10 years agoHelpfull: Yes(0) No(0)
• Let,the third number is 100.
  so,two numbers are 120,150 respectively.
  Hence,the of the two numbers is 4:5.
• 10 years agoHelpfull: Yes(0) No(0)