Question 860186
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Hi,
Let x represent how long would it take the green hose by itself
{{{ 1/3 + 1/x = 1/(.5x) }}}   |Multiplying thru by 1.5x so as all denominators = 1
   .5x + 1.5 = 3
     .5x = 1.5
       x = 3hr, how long would it take the green hose by itself