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03 Jul 2023, 01:28
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DS Question 1 - July 03 A certain library charges a flat fee of $5 for any overdue book for the first x days the book is overdue, and an additional fee of m dollars per day for every day after x that the book is overdue. What is the fee for a book that is 12 days overdue? (1) The fee for a book that is 9 days overdue is $2 more than the fee for a book that is 8 days overdue. (2) The fee for a book that is 8 days overdue is the same as the fee for a book that is 7 days overdue. Source: Manhattan | Difficulty: Medium
CStatement two tells you how many days after X that the extra fee is charged
Statement 1 tells you what the extra fee after X days is.
Using both you can easily find the total cost
03 Jul 2023, 01:33
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PS Question 1 - July 03 In how many ways, 10 identical chocolates be distributed among 3 children such that each child gets at least 1 chocolate? A. 36 B. 66 C. 72 D. 78 E. 84 Source: Expert’s Global | Difficulty: Hard
9C2Since it says at least, we have
N-1 Ck-1
Updated on: 03 Jul 2023, 01:53
Originally posted by mysterymanrog on 03 Jul 2023, 01:52.
Last edited by mysterymanrog on 03 Jul 2023, 01:53, edited 1 time in total.
Last edited by mysterymanrog on 03 Jul 2023, 01:53, edited 1 time in total.
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9C2 Since it says at least, we have N-1 Ck-1
For anyone interested, I believe this comes from "Stars and Bars" theoremhttps://en.wikipedia.org/wiki/Stars_and ... binatorics) for anyone interested
I don’t think the GMAT will ever require you to memorize such a formula, so I would try solving it without using the formula
