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Question 7 (nov. 15th)

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by bacali » Sat Nov 15, 2008 5:00 pm
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, 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

OA: B
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Source: — Problem Solving |

by dmateer25 » Sat Nov 15, 2008 5:44 pm
1st day is .10
2nd day doubling it would be less than adding .30 so it would be .20
3rd day doubling it would be less than adding .30 so it would be .40
4th day it would be less to add .30 than double so it would be .70
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