cost 15 to make the shoes, gave the boy 29 for change, and need 29 more to pay back the nieghborhood, so 15+29+29= 73. simple ,math problem. much easier than calculus~tvb now,tvbnow,bttvb$ P: B/ b& L* G
公仔箱論壇# S. K% N. a% @
[ 本帖最後由 carsonchan 於 2009-2-15 04:18 PM 編輯 ] |