小弟有條IQ題5明

2008-11-08 1:45 pm
有 three guys
they go to canteen and eat
total is $ 25
everyone pay $10 ($30)
找番$5
they give tips $2
每人take 番$1(so everyone pay $9)
9x3=27 +2
=29
點解

回答 (2)

2008-11-08 5:04 pm
✔ 最佳答案
因為條數計錯左,點解用9去乘3而最尾仲要+2呢?9元其實已包括2元tips了。


應該用25元,但再加2元tips,

共27元

27除3

=每人給9元

9乘3=27

27減2元tips

=25 (25是他們原本要付的價錢)
2008-11-09 4:18 am
佢個tips 係3個人夾埋比 $2
所以佢地用左o既總數係 $27
一人有一蚊攞返


收錄日期: 2021-05-03 04:48:25
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