GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
If every donor to a charity drive contributed at least $14
[#permalink]
27 May 2018, 03:54
27 May 2018, 03:54
Expert Reply
2
Bookmarks
00:00
Question Stats:
75% (00:44) correct
24% (00:53) wrong based on 53 sessions
Hide Show timer Statistics
If every donor to a charity drive contributed at least $14 and $237 was collected, what is the maximum number of donors?
(A) 13
(B) 14
(C) 15
(D) 16
(E) 17
(A) 13
(B) 14
(C) 15
(D) 16
(E) 17
Re: If every donor to a charity drive contributed at least $14
[#permalink]
27 May 2018, 13:06
27 May 2018, 13:06
Expert Reply
Explanation
This is a maximization question. To solve maximization questions, you often have to minimize something else. In order to find the maximum number of donors, minimize the donation per person. In this case, everyone could pay exactly $14:
\(\frac{237}{14} = 16.92\)
Rounding up to 17 is not right, because it is not possible that 17 people donated $14 each (the total contributions would be $238, which is greater than $237). The answer is (D), or 16.
This is a maximization question. To solve maximization questions, you often have to minimize something else. In order to find the maximum number of donors, minimize the donation per person. In this case, everyone could pay exactly $14:
\(\frac{237}{14} = 16.92\)
Rounding up to 17 is not right, because it is not possible that 17 people donated $14 each (the total contributions would be $238, which is greater than $237). The answer is (D), or 16.
Re: If every donor to a charity drive contributed at least $14
[#permalink]
05 Jul 2021, 02:53
05 Jul 2021, 02:53
Hello from the GRE Prep Club BumpBot!
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
