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GMATBLACKBELT
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A library determines the overdue charges for books on the 31 Aug 2007, 15:39
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A library determines the overdue charges for books on the first day by charging .10$. Each additional day is charged by either .30$ or by doubling the previous day's fee. What is the overdue charge on a book on the fourth day it is overdue.


.60$

.70$

.80$

.90$

1.00$



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bkk145
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A library determines the overdue charges for books on the Updated on: 31 Aug 2007, 15:51
Originally posted by bkk145 on 31 Aug 2007, 15:49.
Last edited by bkk145 on 31 Aug 2007, 15:51, edited 1 time in total.
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GMATBLACKBELT
A library determines the overdue charges for books on the first day by charging .10$. Each additional day is charged by either .30$ or by doubling the previous day's fee. What is the overdue charge on a book on the fourth day it is overdue.


.60$

.70$

.80$

.90$

1.00$
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It's either
0.1 + 3*0.1 = 1
or
0.1*2*2*2 = 0.8

Cheaper or more expensive?
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GMATBLACKBELT
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A library determines the overdue charges for books on the 31 Aug 2007, 15:51
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OA is .70....? I guess I can see this if you don't count the fourth day, but how are we suppose to know not to count it???
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IrinaOK
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A library determines the overdue charges for books on the 31 Aug 2007, 17:33
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GMATBLACKBELT
A library determines the overdue charges for books on the first day by charging .10$. Each additional day is charged by either .30$ or by doubling the previous day's fee. What is the overdue charge on a book on the fourth day it is overdue.


.60$

.70$

.80$

.90$

1.00$
Show more


The question implies two correct answers.

$1 or $0.8

how are we supposed to chose one correct?
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12345678
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A library determines the overdue charges for books on the 31 Aug 2007, 17:59
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GMATBLACKBELT
A library determines the overdue charges for books on the first day by charging .10$. Each additional day is charged by either .30$ or by doubling the previous day's fee whichever is less. What is the overdue charge on a book on the fourth day it is overdue.


.60$

.70$

.80$

.90$

1.00$
Show more


dude derz a typo in d sum...
i hav solved it before and OA is correct
1st day=.10
2nd day=.20(.10+.10)
3rd day=.40 (.20+.20)( cuz .20 is less than .30)
4th day=.70(.40+.30) (cuz if u double .40 it'll b .80 which is greater than .30)

hope u got it :)
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A library determines the overdue charges for books on the 31 Aug 2007, 21:38
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Ya I got it... I didn't realize you could use BOTH... I thought each had to be seperate so I came up with .80cents...

Thats just annoying.



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
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