Question 413141
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Hi
Let x represent Jenny's portion
Jenny: x  
Demi: x/2
Drew: (3/4)x
Question states***
  x + x/2 + 3x/4 = 18in  |Multiplying thru by 4 so as all denominators=1
Solving for x
 4x + 2x + 3x = 72
        9x = 72
         x = 8in
Jenny: 8in  
Demi:  4in
Drew:  6in      |Note: portions total 18in