GMAT: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 fines is either increased by $0.30 or doubled,whichever results in the lesser amount.What is the total fine for a book on the fourth day it is overdue?A/0.60 B/0.70 C/0.80 D/0.90 E/1.00
问题描述：
GMAT:
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 fines is either increased by $0.30 or doubled,whichever results in the lesser amount.What is the total fine for a book on the fourth day it is overdue?
A/0.60 B/0.70 C/0.80 D/0.90 E/1.00
答
B/0.70 .SECONF DAY :DOUBLED,TOTAL FINES 0.2 THIRD DAY:DOUBLED,TOTAL FINES:0.4.FOURTH DAY INCREASED,TOTAL FINES :0.7