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Buy = 8 + 10 = $18: R/ D/ a' e1 |& J) D* y
Sell = 9 + 11 = $20
) M9 o4 s- w- P1 Y" P6 N3 L' C5 gtvb now,tvbnow,bttvb; n7 s0 z' s' V6 l
Gain = $2
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