※ 引述《waterdrop (林)》之銘言：
: 請問各位
: $1 is increased by $3
: 指的是從一塊變成三塊
: 還是一塊加三塊變成四塊呢
: 又
: 如果是 be decreased by 20%
: 指的是變成80% 還是減掉20%
: 感謝回答^^
先謝謝f大的回答
但我想請教一下這題jj
158. A certain library assesses fines for overdue books as follows.
On the first day that a book is overdue, the total fine is $0.10,
for each additional day that the book is overdue,
the total fine is either increased by $0.30 or doubled,
which ever results in the lesser amount.
what is the total fine for a book on the fourth day it is overdue?
ans:0.7
如果是如f大所言
那此題就變成
day1-->day2-->day3-->day4
increased by 0.3(為+0.3) 0.1 0.4 0.7 1.0
double 0.1 0.2 0.4 0.8
會是採double的罰則 罰金0.8塊比較便宜
但若increased by 0.3(為+0.2) 0.1 0.3 0.5 0.7-->同ans
可以再為我解惑一下嗎
多謝^^
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※ 編輯: waterdrop 來自: 220.138.54.101 (10/19 23:22)