Question 440281
<pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi
Let x represent how  long will it take them together to type the essay
Question states*** Per hour the Equalizer
  1/6 + 1/4.5 = 1/x
  4.5x + 6x = 6*4.5
       10.5x = 27
           x = 27/(21/2)
           x = 54/21 = 2 12/21  OR 2 4/7 hr