title: Change value of a textbox, compared to another text box value with a ratio
body: <p>I am working on ASP.NET C#.</p>
  
  <p>With Javascript, I need to change the value of a textbox, when another text box value changes with the ratio of 3:2.  </p>
  
  <p>For example, if the value in a text is 150, the other textbox value should be 100.</p>