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4#
發表於 2008-3-14 10:14 AM
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題目誤導人~
' T1 _8 T, B! S7 ~4 A7 x' H( Qowner 1005.39.217.77 d1 C9 K0 c6 W( _, y
owner's son 20/ S. C+ A+ U1 A+ ~! L: y
each pay 40' U/ c$ v- _# `: s& G! E7 S
40*3 = 120: E. A( v% y9 D `. _
120(3 guys) - 20(owner's son) = 100 (owner) |
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