Stupid question! Confusing us to think in wrong way..... * Y' I. X& m# B# I% J1 D7 i
this sentence: 9x3+服務生暗藏的2元=29元...... ...trick us!!!作者: karen0123 時間: 2007-2-5 04:55 PM
應該係咁計 4 d0 ], m, G& y. x0 E4 e; V. \; }# `
一開始每人出10元=3*10=30 ) ~* X4 N, D$ G) N2 K老闆話特價25元=30-5 ' _/ h9 m# M1 n& W- X個侍應偷左2蚊=果三個人總共要用多2蚊=30-5+2=27+ h& o G' j0 J# L' z
所以個侍應偷左2蚊後,每人就要用(30-5+2)/3=9元作者: ming1226 時間: 2007-2-5 05:04 PM