Quant Question of the Day Chat : Quantitative Questions

bb · 2022-10-20T20:57:38-07:00

Hello everyone and welcome to the GMAT Club's Quant Question of the Day If you would like to join the Quant Question of the Day Chat Group, Join the chat group here Group moderator is gmatophobia Welcome aboard! -BB And I have some news for the group - I would like to welcome gmatophobia as the new Moderator of this chat group. Please give him a day or two to get situation and get this group going with posting questions as well as sharing any interesting posts and links. Welcome gmatophobia - you are the first Quant Chat group moderator we have had

VivekPrateek

Joined: 01 May 2022

Last visit: 29 Dec 2024

Posts: 478

Own Kudos:

607

Given Kudos: 117

Location: India

WE:Engineering (Computer Software)

Posts: 478

Kudos: 607

04 Feb 2024, 07:43

Kudos

Bookmarks

racgt

Mine is 217 which is option E

As the ans is already said by Author, do let us know how you calculated this

May be we can see this

racgt

Joined: 29 Jan 2024

Last visit: 08 Jan 2025

Posts: 17

Own Kudos:

8

Given Kudos: 3

Location: India

Posts: 17

Kudos: 8

04 Feb 2024, 07:47

Kudos

Bookmarks

Let the total price is. P
The amount paid by kamrul :

P-13%of P =315
It gives P=362

For the max diff , oishi will get 40 % discount (30 +10)
Which is 60%of P
So Oishi will pay 217 and the difference is 315-217=98

VivekPrateek

Joined: 01 May 2022

Last visit: 29 Dec 2024

Posts: 478

Own Kudos:

607

Given Kudos: 117

Location: India

WE:Engineering (Computer Software)

Posts: 478

Kudos: 607

04 Feb 2024, 07:49

Kudos

Bookmarks

No it is not net discount that 30+10 is 40 otherwise if some shop gives 90+10 % discount then the product is free

Either calculate using formula otherwise do two operation like nullbyte has done above

Hope you understand

racgt

Joined: 29 Jan 2024

Last visit: 08 Jan 2025

Posts: 17

Own Kudos:

8

Given Kudos: 3

Location: India

Posts: 17

Kudos: 8

04 Feb 2024, 07:56

Kudos

Bookmarks

I have a doubt

Is he getting the additional discount on the marked price or on the previous discount?

VivekPrateek

Joined: 01 May 2022

Last visit: 29 Dec 2024

Posts: 478

Own Kudos:

607

Given Kudos: 117

Location: India

WE:Engineering (Computer Software)

Posts: 478

Kudos: 607

04 Feb 2024, 07:59

Kudos

Bookmarks

Things here is like suppose a product is of Rs 100 and it is sold 50%+50% discount, so the first time the price is rs 50 and then the second time price will be 25. Since they have not written here explicitly about MP here, first time price you can think as MP and then after all discount the sale of item you can say SP

Shubhradeep

Joined: 11 Jan 2024

Last visit: 16 Jan 2025

Posts: 121

Own Kudos:

191

Given Kudos: 91

Location: India

Concentration: Finance, Entrepreneurship

GPA: 3.14

Posts: 121

Kudos: 191

04 Feb 2024, 10:06

Kudos

Bookmarks

Astha_shri

Hey team is there a better way to approach this question? I do understand the solution given below and online but find it too lengthy, is a there a quicker way by any chance?

y is a multiple of 5. y can’t be 0 because in that case 3x=200 which gives us no integral solution.
We take y=5k which makes our equation 3x=200-4*5k
=> 3x = 200-20k = 20(10-k) = 2*10*(10-k)

So it must be a multiple of 10
Correct option E

rahulyadav123

Joined: 03 Dec 2021

Last visit: 05 Jan 2025

Posts: 15

Own Kudos:

6

Given Kudos: 226

Posts: 15

Kudos: 6

05 Feb 2024, 00:36

Kudos

Bookmarks

BY WHEN WILL THE OFFICIAL GUIDE QUESTIONS 2023/2024 ADDED TO THE FORUM QUIZ

Bunuel

Math Expert

Joined: 02 Sep 2009

Last visit: 18 Jan 2025

Posts: 98,773

Own Kudos:

694,773

Given Kudos: 91,822

Products:

Expert reply

Posts: 98,773

Kudos: 694,773

05 Feb 2024, 02:33

Kudos

Bookmarks

Data Sufficiency Butler: February 2024
February 5	DS 1	DS 2

Bunuel

Math Expert

Joined: 02 Sep 2009

Last visit: 18 Jan 2025

Posts: 98,773

Own Kudos:

694,773

Given Kudos: 91,822

Products:

Expert reply

Posts: 98,773

Kudos: 694,773

05 Feb 2024, 02:34

Kudos

Bookmarks

Problem Solving Butler: February 2023
February 5	PS 1	PS 2

Rohan271

Joined: 10 Apr 2023

Last visit: 18 Jan 2025

Posts: 79

Own Kudos:

30

Given Kudos: 75

Location: India

Posts: 79

Kudos: 30

05 Feb 2024, 08:24

Kudos

Bookmarks

I have a doubt in this questionhttps://gmatclub.com/forum/if-k ... 07071.html

why the first option cannot be solved algebraically to give k=1 If K is a non-zero integer, does K = 1?

(1) K^K = K
(2) K^K = 1

M36-132

in the first option?

Aryaa03

Joined: 12 Jun 2023

Last visit: 18 Jan 2025

Posts: 212

Own Kudos:

227

Given Kudos: 158

Location: India

Schools: ISB '27 (WL) IIM Calcutta '26 (A) IIMA '26 (D)

GMAT Focus 1: 645 Q86 V81 DI78 Verified score

Schools: ISB '27 (WL) IIM Calcutta '26 (A) IIMA '26 (D)

GMAT Focus 1: 645 Q86 V81 DI78 Verified score

Posts: 212

Kudos: 227

05 Feb 2024, 08:32

Kudos

Bookmarks

For K=-1 ; (-1)^(-1) = -1 ;

+1 and -1 are two possible cases for St-1. Whereas, for st-2 K=1 is the only solution

Rohan271

Joined: 10 Apr 2023

Last visit: 18 Jan 2025

Posts: 79

Own Kudos:

30

Given Kudos: 75

Location: India

Posts: 79

Kudos: 30

05 Feb 2024, 09:14

Kudos

Bookmarks

why is solving for k in option 1 is wrong? --- k^k-k=0 leads to k(k^(k-1) -1)=0 which gives k=1

Nullbyte

Joined: 06 Oct 2023

Last visit: 17 Jan 2025

Posts: 351

Own Kudos:

125

Given Kudos: 58

Posts: 351

Kudos: 125

05 Feb 2024, 09:20

Kudos

Bookmarks

Rohan271

why is solving for k in option 1 is wrong? --- k^k-k=0 leads to k(k^(k-1) -1)=0 which gives k=1

Are you trying to solve k^(k-1)=1?

Nullbyte

Joined: 06 Oct 2023

Last visit: 17 Jan 2025

Posts: 351

Own Kudos:

125

Given Kudos: 58

Posts: 351

Kudos: 125

05 Feb 2024, 09:22

Kudos

Bookmarks

Rohan271

yes

Put k = - 1 in the equation

Rohan271

Joined: 10 Apr 2023

Last visit: 18 Jan 2025

Posts: 79

Own Kudos:

30

Given Kudos: 75

Location: India

Posts: 79

Kudos: 30

05 Feb 2024, 09:23

Kudos

Bookmarks

but if i take 1 as k^0 on right side then it comes to k=1

Nullbyte

Joined: 06 Oct 2023

Last visit: 17 Jan 2025

Posts: 351

Own Kudos:

125

Given Kudos: 58

Posts: 351

Kudos: 125

05 Feb 2024, 09:24

Kudos

Bookmarks

Yes so there’s 2 solutions to the equation
First is k=1 which gives 1^(1-1) =1
Second is (-1)^(-2)=1

So you can’t say if k=1 or not

Rohan271

Joined: 10 Apr 2023

Last visit: 18 Jan 2025

Posts: 79

Own Kudos:

30

Given Kudos: 75

Location: India

Posts: 79

Kudos: 30

05 Feb 2024, 09:27

Kudos

Bookmarks

i do not need to put k=-1 because K^(k-1)=K^0 which implies k=1 or 0 but as k is non zero integer k=1 is the only answer

Quant Question of the Day Chat

Prep Toolkit

My Rewards