ratio between 2 numbers is 5:7 and their product is 560.what is the difference between 2 numbers?

• x/y=5/7
  x*y=560
  x=560/y
  y=28
  x=20
  x-y=-8
  y-x=8
• 10 years agoHelpfull: Yes(12) No(0)
• (x*x)/(x*y)=5:7
  x=20
  y=28
  x-y=8
• 10 years agoHelpfull: Yes(7) No(2)
• ans is 8.
  
• 10 years agoHelpfull: Yes(6) No(0)
• x/y=5/7
  xy=560
  y^2=560*(7/5)=28*28
  y=28
  x=20
  y-x=8
• 10 years agoHelpfull: Yes(4) No(0)
• suppose x is proportional constant
  then from question it is given that product is 560.
  so,5x*7x=560
  35x^2=560
  x^2=16
  x=4 or -4
  so difference is (28-20) or (-20-(-28)) is equal to 8
• 10 years agoHelpfull: Yes(4) No(0)
• Answer will be 8
  Let two nos. be 5x and 7x
  According to the question 5x*7x=560
  x*x=16======>>> x=4
  So no. will be 20 and 28
  So difference b/w them= 28-20=8
• 10 years agoHelpfull: Yes(3) No(2)
• (5*x)*(7*x)=560
  35*x^2=560
  x^2=16
  x=4 (i.e 4*4)
  5*4=20
  7*4=28
  20-28=-8
  28-20=8
  so ans is 8.
  
• 10 years agoHelpfull: Yes(2) No(0)
• x/y=5/7 i.e,x=5/7*y
  xy=560
  5/7*y*y=560(solve it we get
  y=28
  x=20
  then x-y=8
• 10 years agoHelpfull: Yes(0) No(0)
• 5x*7x=35x(pow2)
  so 560/35=16
  x=+-4
  so 4*5=+-20
  4*7=+-28
  so 28-20=+-8
• 10 years agoHelpfull: Yes(0) No(0)
• x/y=5/7
  xy=560
  x^2=400
  x=20
  and y=28
  so difference is 8
• 10 years agoHelpfull: Yes(0) No(0)
• x*y=560,
  x/y=5/7
  by solving these two we get x=20,y=28
  and the difference between x and y is 8
• 10 years agoHelpfull: Yes(0) No(0)
• let the numbers be 5x and 7x,then
  5x*7x=560 and x is +4/-4.
  the difference will be 2x,so it will be +8/-8
• 10 years agoHelpfull: Yes(0) No(0)
• let the number be 5x and 7 x.
  now according to question,,,,
  5x into 7x =560
  x=4
  numbers are 20 and 28
  we can also verify...20:28=5:4
  and 20*28=560
• 8 years agoHelpfull: Yes(0) No(0)
• the numbers will be 5x,7x
  product=5x*7x=35x^2
  so 35x^2=560
  x^2=560/35=16
  x=4
  so the numbers are 5*4,7*4
  difference would be 28-20=8
• 8 years agoHelpfull: Yes(0) No(0)
• x/y=5/7
  =>x=5y/7;
  x*y=560
  =>x=560/y
  by solving this: 560/y=5y/7
  y=28
  and x=20
  so difference is 8
• 8 years agoHelpfull: Yes(0) No(0)
• ans depends on option
  given ratio is 5:7
  lets take common factor as X.
  it is given that product of number is 560
  ie 5X*7X=560
  on solving we get X=4,-4
  so the number is -20 and -28 OR 20 and 28
  both are correct but we have to see the option and according to option we will select the ans
• 8 years agoHelpfull: Yes(0) No(0)
• x/y=5/7 & x.y=560
  hense x=560/y.....(i)
  7x-5y=0
  putting value from (i)
  we got x=20 and y=28.
  so difference between two numbers is 8.
• 5 years agoHelpfull: Yes(0) No(0)