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total cost = 8 + 105.39.217.77:8898# n8 |) l. N& p9 |( W
total sales = 9 + 11. i) z# z) n, P3 w4 ~7 z4 j' Q- O

  o( K+ l6 f( b/ z4 Vtvb now,tvbnow,bttvbtotal profit = 20 - 18 = 2
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