※ 引述《dw5000 (休息一下~~)》之銘言：
: Oak trees line both sides of a street for a length of
: 3/8 of a kilometers. If there is 16 meters of space between
: the trees, and each tree is 1 meter wide, how many trees are there
: along the street
: (a)22
: (b)23
: (c)42
: (d)44
: (e)46
: ANS. e
: 怎麼算都是d啊~~算不出e >.<"" 請善心人士救救我
兩邊都有樹線,先算一邊在x2
設總共有x棵樹,則總共有 x-1個間距
間距寬度=16m , 樹的寬度=1m
x*(1)+(x-1)*16=3*1000/8=375
x=23
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 123.193.16.226
推
08/19 18:25, , 1F
08/19 18:25, 1F
討論串 (同標題文章)