title: Concatenating string with number in ruby
body: <p>I am total begineer in ruby so its very novice question.</p>
  
  <p>I am trying to concatenate a string with a float value like follows and then printing it.</p>
  
  <pre><code>puts " Total Revenue of East Cost: " + total_revenue_of_east_cost 
  </code></pre>
  
  <p>total_revenue_of_east_cost is a variable holding float value, how i can make it print?</p>