Last visit was: 27 Apr 2024, 15:23 It is currently 27 Apr 2024, 15:23
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
PREVIOUS TOPIC
NEXT TOPIC

An institute charges $n/2 for one time registration

Tags :
Find Similar Topics  About  Add a Tag

Show Tags
Hide Tags

avatar
erica29
Intern
Intern
Joined: 03 May 2020
Posts: 5
Own Kudos [?]: 2 [0]
Given Kudos: 0
Send PM
An institute charges $n/2 for one time registration [#permalink] New post   03 May 2020, 13:25
1
00:00

Question Stats:

83% (00:57) correct 16% (03:32) wrong based on 6 sessions

Hide Show timer Statistics

An institute charges $n/2 for one time registration and $3n/2 per session for first "n" sessions after which each session is charged $n only. If a student paid $60 for (n+4) sessions he attended, including the registration fee, what is the value of n?

A. 4
B. 5
C. 6
D. 7
E. 8
ShowHide Answer
Official Answer
B
avatar
vndnjn
Retired Moderator
Joined: 16 Oct 2019
Posts: 63
Own Kudos [?]: 171 [0]
Given Kudos: 21
Send PM
Re: Equations [#permalink] New post   03 May 2020, 19:03
registration fee + fee for first n sessions + 4*n(for each session) = 60
n/2+3n/2+4n=60;
6n=60;
n=10

I guess ans should be 10
avatar
erica29
Intern
Intern
Joined: 03 May 2020
Posts: 5
Own Kudos [?]: 2 [0]
Given Kudos: 0
Send PM
Re: Equations [#permalink] New post   03 May 2020, 20:55
Hi thanks for taking the time to answer. But N =10 is not one of the options.

Regards

Posted from my mobile device Image
User avatar
rishabhrbs96
Manager
Manager
Joined: 02 May 2020
Posts: 91
Own Kudos [?]: 138 [0]
Given Kudos: 0
Send PM
Re: Equations [#permalink] New post   03 May 2020, 21:18
2
vndnjn wrote:
registration fee + fee for first n sessions + 4*n(for each session) = 60
n/2+3n/2+4n=60;
6n=60;
n=10

I guess ans should be 10


fee for first n sessions is 3n/2 "per session", so

n/2 + (n * 3n/2) + 4n = 60
=> 3(n^2)/2 + 9n/2 - 60 = 0
=> 3(n^2) + 9n - 120 = 0
=> (n^2) + 3n - 40 = 0
=> (n - 5)*(n + 8) = 0
=> n = 5 or n = -8

So, answer is B
avatar
vndnjn
Retired Moderator
Joined: 16 Oct 2019
Posts: 63
Own Kudos [?]: 171 [0]
Given Kudos: 21
Send PM
Re: Equations [#permalink] New post   04 May 2020, 04:32
rishabhrbs96 wrote:
vndnjn wrote:
registration fee + fee for first n sessions + 4*n(for each session) = 60
n/2+3n/2+4n=60;
6n=60;
n=10

I guess ans should be 10


fee for first n sessions is 3n/2 "per session", so

n/2 + (n * 3n/2) + 4n = 60
=> 3(n^2)/2 + 9n/2 - 60 = 0
=> 3(n^2) + 9n - 120 = 0
=> (n^2) + 3n - 40 = 0
=> (n - 5)*(n + 8) = 0
=> n = 5 or n = -8

So, answer is B




Thanks for the correction :)
avatar
erica29
Intern
Intern
Joined: 03 May 2020
Posts: 5
Own Kudos [?]: 2 [0]
Given Kudos: 0
Send PM
Re: An institute charges $n/2 for one time registration [#permalink] New post   04 May 2020, 15:55
yes absolutely correct!

Thank you!!
Prep Club for GRE Bot
gmatclubot
[#permalink]
Moderators:
BrushMyQuant
Moderator
1085 posts
VibhuAnurag
GRE Instructor
218 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | Prep Club for GRE Rules | Contact