If vx + vy = 17 and vx - vy = 1 then vxy =
(a) 17 (b) v17 (c) 72 (d) v72

• x+y=17/v;
  x-y=1/v;
  x=9/v;
  y=8/v;
  vxy= 72/v;;;;; option isn't correct;;;
  
• 12 years agoHelpfull: Yes(14) No(1)
• solve simultaneously
  you get x=9/v
  y=8/v
  substitute
  you get the answer as 72/v
  which is not in the question!
• 12 years agoHelpfull: Yes(4) No(0)
• v(x+y)=17
  V(x-y)=1
  calculate x then
  x=9/v
  y=8/v
  vxy=9*8=v72
  
  am not sure of tis may be it is 72
• 12 years agoHelpfull: Yes(4) No(6)
• x+y=17/v;
  x-y=1/v;
  x=9/v;
  y=8/v;
  vxy= 72/v...dis one is correct..im sure
• 12 years agoHelpfull: Yes(4) No(0)
• v(x+y)=17
  V(v-y)=1
  calculate x by solving simultanesly
  x=8/v
  y=7/v
  put the values...u get vxy=56/v
• 12 years agoHelpfull: Yes(1) No(12)
• have u recently given tcs xam ? cn u plz help 2 crack tcs apti?
• 12 years agoHelpfull: Yes(1) No(0)
• if
  vx=09
  vy=08
  then vx+vy=17
  and vx-vy=1
  so v=0,x=9,y=8 (by comparing the digit places)
  
  so vxy=098...which is nt in the options
• 11 years agoHelpfull: Yes(0) No(0)