Question 386484
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Hi
Let x represent the weight is muscle for the 150lb animal
Question Sets Up the Proportion
 {{{5/6 = x/150}}}
Cross multiply to solve for x
  6x = 5*150
   x = 5*150/6
   x = 125, the weight is muscle for the 150lb animal

CHECKING our Answer
  5/6 = 125/150  = 5/6