hase000

王老板損失了 176 元。

hase000

qwertt12,
( K* N& A$ r+ |TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。Your calculation should be wrong. As Mr. Wong need to refund $100 to his neighbour. The calculation should be :+ O6 W6 }& f* {& y/ e
$100 (refund to neighbour from Mr Wong's own money) + $79 (paid to the young man) - $3 (earning from the sale) = $176
/ q. @0 ?" |( wTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。This should be the fact.

hase000

5 b( }9 D, ?9 L5 G! b* y5.39.217.77:8898) w% K5 c! x& w  U# H+ p; v7 f/ G
Sorry, I think wrong. Actual loss should be $118 (refund to neighbour $100 + cost of gift $18) - $21 (sales income) = $97