Question 397562
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Hi
Michigan plant of Titan Industires is four times as old as the Ohio plant
Let x and 4x represent ages of the Ohio and Michigan Plant respectively
Question states***
 4x - x = 9
solving for x
  3x = 9
   x = 3, age of the Michigan Plant.  Ohio Plant is 12 years old

CHECKING our Answer**
  12 - 3 = 9