Number of shares = 100 shares
Margin percentage = 55%
Initial investment amount =100 shares×20×55%=1100
Interest expense on 45% of the investment from own funds
=20×(1−55%)×100×10%=90
Commission amount =(20+27)×100×3%=141
Dividend amount =100×0.50=50
Amount received from sale =100×27=2700
Cost of shares =100×20=2000
Rate of return =11002700−2000+50−90−141
Rate of return =1100519=0.4718 or 47.18%
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