. Find (7x + 4y ) / (x-2y) if x/2y = 3/2 ?

(A) 6
(B) 8
(C) 7
(D) data insufficient

• given:
  x/2y = 3/2
  => (x-2y)/2y = 1/2
  => x = 3y
  Putting x = 3y in (7x+4y)/(x-3y) gives value 25.
  but seems like no option is correct.
• 12 years agoHelpfull: Yes(29) No(7)
• option D none of these
  
  25 is the answer
  
• 12 years agoHelpfull: Yes(8) No(0)
• answer is c-7
  
• 10 years agoHelpfull: Yes(3) No(9)
• D is da answer coz answer comes 25 and its nt given dere.......
• 12 years agoHelpfull: Yes(2) No(0)
• by the way this is the problem of TCS..
• 12 years agoHelpfull: Yes(1) No(2)
• since x=3y, answe ll be 25
  
• 12 years agoHelpfull: Yes(1) No(0)
• x/y=3
  7*3+4=25
• 12 years agoHelpfull: Yes(1) No(0)
• x/2y= 3/2; =>2x=6y; =>x/y= 3;
  
  (7x+4y)/(x-2y); => x(7+4(y/x))/ y((x/y)-2) => x/y * (7+4*(1/3))/ (3-2)
  
  => 3*(7+(4/3))/1
  => 3*((25/3)/1)
  => 3*(25/3)
  => 25 ans
  
• 11 years agoHelpfull: Yes(1) No(0)
• divide through out by 2y. ((7x/2y)+2)/((x/2y)-1).
  substitute the value x/2y=3/2.
  solving we get ------>6.22
• 10 years agoHelpfull: Yes(1) No(4)
• solving given gives x=3y
  substitute in given question gives 25...
• 11 years agoHelpfull: Yes(0) No(0)
• given x/2y=3/2
  so x/y=3
  (7x+4y)/(x-2y)= (7(x/y)+(4)/((x/y)-(2))
  (7*3)+4/(3-2)=25
• 10 years agoHelpfull: Yes(0) No(0)
• x/2y= 3/2; =>2x=6y; =>x/y= 3;
  
  (7x+4y)/(x-2y); => x(7+4(y/x))/ y((x/y)-2) => x/y * (7+4*(1/3))/ (3-2)
  
  => 3*(7+(4/3))/1
  => 3*((25/3)/1)
  => 3*(25/3)
  => 25 ans
  
• 9 years agoHelpfull: Yes(0) No(0)
• given:
  x/2y=3/2
  in denominator we choose the x-2y it seems like (x/2y-1) gives 1/2
  you have to right x=3y from given data .
  putting these values in given questions like 7(3y)+4yto get 25y in numerator,denominator 3y-2y to get y
  then 25y/y=25
• 8 years agoHelpfull: Yes(0) No(0)
• The answer is 4A+B-C(when we are supposed to answer in terms of the options specified) :p
• 8 years agoHelpfull: Yes(0) No(0)
• x=3y
  subsituting this we get 25
• 8 years agoHelpfull: Yes(0) No(0)
• 25 is the correct answer
  
• 8 years agoHelpfull: Yes(0) No(0)
• Ans. 25
  as dividing both numerator and denominator by 2y,
  we get : ((21/2)+2)/((3/2)-1)= 25/1=25
• 5 years agoHelpfull: Yes(0) No(0)