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Question 47495:

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
EF = 4x+5
EQUATION:
(4x+5)/(2x+4) = 15/10 = 1.5
1.5(2x+4)=4x+5
3x+6=4x+5
x=1
EF=4(1)+5=9
Cheers,
stan H.