Practice Questions Chat : General GMAT Questions and Strategies

bb · 2022-10-20T20:57:38-07:00

Hello everyone and welcome to the GMAT Club's Question Discussion Group Post all GMAT Questions Questions such as Quant, Verbal, or DI here. For strategy, debriefs, and study buddy, visit those specific groups. Thank you! Looking for the chatgroup instead? Join the chat group here

zachadam1999

Joined: 30 Jul 2023

Last visit: 13 Oct 2023

Posts: 22

Own Kudos:

4

Given Kudos: 25

Posts: 22

Kudos: 4

02 Aug 2023, 09:01

Kudos

Bookmarks

Can someone break the second part of the us question down ?

The numbers a and b are both positive. What is the ratio of a to b ?

(1) The ratio of 4a + 3b to 5a + 12b is 3 to 4.

(2) The average (arithmetic mean) of a, 3a, 3b, 12b, and 14b is equal to a + b.

AbdullahQidwae

Joined: 17 Jun 2023

Last visit: 15 Oct 2023

Posts: 37

Own Kudos:

14

Given Kudos: 16

Posts: 37

Kudos: 14

02 Aug 2023, 09:09

Kudos

Bookmarks

aman_kumar

Jim needs to mix a solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, Jim makes a mistake and mixes in half as much bleach as he ought to have. The total solution consists of 18 mL. How much did Jim put into the solution? A. 1mL B. 2mL C. 3mL D. 4mL E. 5mL

If it is asking about bleach : it is 1.8 ml and as near answer . It should be B. 2ml

Mapat

D is a 3 digit number such that ratio of number to the sum of it’s digits is least. What is the difference between the digit at hundred’s place and the digit at unit’s place?

0 ?

Russellgmat

Joined: 25 Jul 2023

Last visit: 11 Jun 2025

Posts: 2

Own Kudos:

2

Given Kudos: 1

Location: United Kingdom

GMAT 1: 700 Q47 V31 Verified score

Posts: 2

Kudos: 2

02 Aug 2023, 10:17

Kudos

Bookmarks

zachadam1999

Can someone break the second part of the us question down ? The numbers a and b are both positive. What is the ratio of a to b ? (1) The ratio of 4a + 3b to 5a + 12b is 3 to 4. (2) The average (arithmetic mean) of a, 3a, 3b, 12b, and 14b is equal to a + b.

(4a + 29b)/5 = a+b

4a + 29b = a + b

24b = a

Sufficient

* 4a + 29b = 5a + 5b

zachadam1999

Joined: 30 Jul 2023

Last visit: 13 Oct 2023

Posts: 22

Own Kudos:

4

Given Kudos: 25

Posts: 22

Kudos: 4

02 Aug 2023, 10:27

Kudos

Bookmarks

Russellgmat

(4a + 29b)/5 = a+b 4a + 29b = a + b 24b = a Sufficient

Thank you @Russellg

deesha.mallick

Joined: 02 Aug 2023

Last visit: 02 Jan 2024

Posts: 3

Kudos: 0

02 Aug 2023, 20:22

Kudos

Bookmarks

10 to the power 8- 10 to the power 2 divided by 10 to the power 7- 10 to the power 3

how to solve

zachadam1999

Joined: 30 Jul 2023

Last visit: 13 Oct 2023

Posts: 22

Own Kudos:

4

Given Kudos: 25

Posts: 22

Kudos: 4

02 Aug 2023, 20:29

Kudos

Bookmarks

10^2(10^6 - 1 ) / 10^3(10^4 -1) : I think with addition and subtraction of exponents you have to factor but I’m not 100% someone might have a more clear explanation

*factor out common terms

deesha.mallick

Joined: 02 Aug 2023

Last visit: 02 Jan 2024

Posts: 3

Kudos: 0

02 Aug 2023, 20:33

Kudos

Bookmarks

I tried doing that...the answer isnt matching..answer is 10

zachadam1999

Joined: 30 Jul 2023

Last visit: 13 Oct 2023

Posts: 22

Own Kudos:

4

Given Kudos: 25

Posts: 22

Kudos: 4

02 Aug 2023, 20:50

Kudos

Bookmarks

10^2(10^6 -1)/10^3(10^4 -1) =

10^-1 (10^6 -1) /( 10^4 - 1)

then subtract

(10^6 -1) and (10^4 -1)

You are left with
10^-1 (10^2) which is 10^1 or 10

Deepihu

Joined: 25 Jul 2023

Last visit: 24 Dec 2023

Posts: 13

Own Kudos:

9

Given Kudos: 6

Location: India

Posts: 13

Kudos: 9

02 Aug 2023, 21:34

Kudos

Bookmarks

zachadam1999

Can someone break the second part of the us question down ? The numbers a and b are both positive. What is the ratio of a to b ? (1) The ratio of 4a + 3b to 5a + 12b is 3 to 4. (2) The average (arithmetic mean) of a, 3a, 3b, 12b, and 14b is equal to a + b.

Both 1& 2 are sufficient alone enough to get ratio

zachadam1999

Joined: 30 Jul 2023

Last visit: 13 Oct 2023

Posts: 22

Own Kudos:

4

Given Kudos: 25

Posts: 22

Kudos: 4

03 Aug 2023, 05:10

Kudos

Bookmarks

Deepihu

Both 1& 2 are sufficient alone enough to get ratio

Thank you, to solve first part you set 4a+3b / 5a + 12b = 3/4 and cross multiply , then simplify right ?

Arpit_Bhardwaj

Joined: 13 Jun 2023

Last visit: 08 Sep 2023

Posts: 41

Own Kudos:

37

Given Kudos: 2

Posts: 41

Kudos: 37

03 Aug 2023, 12:45

Kudos

Bookmarks

zachadam1999

Thank you, to solve first part you set 4a+3b / 5a + 12b = 3/4 and cross multiply , then simplify right ?

Yes as per my understanding you can seperate both a and b on lhs and rhs and hence can find the value of the ratio.

gmatophobia

Quant Chat Moderator

Joined: 22 Dec 2016

Last visit: 17 Jul 2025

Posts: 3,151

Own Kudos:

9,035

Given Kudos: 1,860

Location: India

Concentration: Strategy, Leadership

Products:

Posts: 3,151

Kudos: 9,035

04 Aug 2023, 02:45

Kudos

Bookmarks

DS Question 1 - August 04

The average (arithmetic mean) of a list of positive numbers is what percent of the sum of the numbers?

(1) The sum of the numbers in the list is 150.
(2) There are 25 numbers in the list.

Source: GMAT Club Tests | Difficulty: Medium

PS Question 1 - August 04

30^20 - 20^20 is divisible by all of the following values, EXCEPT:

A) 10
B) 25
C) 40
D) 60
E) 64

Source: GMATPrepNow | Difficulty: Hard

captain_Akshay

Joined: 03 Aug 2023

Last visit: 17 Aug 2023

Posts: 2

Own Kudos:

2

Posts: 2

Kudos: 2

04 Aug 2023, 03:02

Kudos

Bookmarks

Priyankajaismali

C

Can someone please explain this? Where are the options given ? Everyone is typing C

Priyankajaismali

Joined: 30 Jun 2021

Last visit: 28 Jan 2024

Posts: 136

Own Kudos:

81

Given Kudos: 232

Location: India

Schools: McCombs '24 Bocconi Tepper '24 IIMA PGPX'23 Haskayne(Calgary) S.P.Jain Institute WHU MBA HEC Montreal Mannheim ESMT Alberta University DeGroote Molson Sauder '25 IIML IPMX'25 Great Lakes

GMAT 1: 400 Q34 V13 Verified score

GPA: 3.04

Schools: McCombs '24 Bocconi Tepper '24 IIMA PGPX'23 Haskayne(Calgary) S.P.Jain Institute WHU MBA HEC Montreal Mannheim ESMT Alberta University DeGroote Molson Sauder '25 IIML IPMX'25 Great Lakes

GMAT 1: 400 Q34 V13 Verified score

Posts: 136

Kudos: 81

04 Aug 2023, 03:04

Kudos

Bookmarks

captain_Akshay

Can someone please explain this? Where are the options given ? Everyone is typing C

it is the standard option pattern in DS question

you can refer official gmat guide for this pattern

captain_Akshay

Joined: 03 Aug 2023

Last visit: 17 Aug 2023

Posts: 2

Own Kudos:

2

Posts: 2

Kudos: 2

04 Aug 2023, 03:05

Kudos

Bookmarks

Thank you so much 🙏

DG1989

Joined: 16 Feb 2023

Last visit: 24 Dec 2024

Posts: 140

Own Kudos:

289

Given Kudos: 9

Location: India

Concentration: Finance, Technology

Schools: Kellogg '26

GPA: 4

Schools: Kellogg '26

Posts: 140

Kudos: 289

04 Aug 2023, 10:18

Kudos

Bookmarks

gmatophobia

DS Question 1 - August 04 The average (arithmetic mean) of a list of positive numbers is what percent of the sum of the numbers? (1) The sum of the numbers in the list is 150. (2) There are 25 numbers in the list. Source: GMAT Club Tests | Difficulty: Medium

B

gmatophobia

PS Question 1 - August 04 30^20 - 20^20 is divisible by all of the following values, EXCEPT: A) 10 B) 25 C) 40 D) 60 E) 64 Source: GMATPrepNow | Difficulty: Hard

D

AM = Sum/n

so (AM/Sum)*100 = ((sum)/(sum * n)) * 100 = 100/n

so if we know number of terms then we can calculate the percentage. Option B gives us that. Option A just tells us value of sum.. hence insufficient

Niv1992

Joined: 25 Jun 2023

Last visit: 18 Dec 2024

Posts: 14

Own Kudos:

4

Given Kudos: 3

Posts: 14

Kudos: 4

05 Aug 2023, 00:20

Kudos

Bookmarks

Please solve without trigonometry

	Manhattan Prep: $79 Bonus 6 official GMAT practice exams
	Target Test Prep - Save up to $479 $400 Discount + $79 Bonus GMAT Club Tests
	e-GMAT: 60% Off on GMAT Focus Get to 735+ from any starting point
	Magoosh increases your score, guaranteed - 20% off ALL Magoosh GMAT plans
	Experts' Global - $899 ~~$1083~~ End-to-End GMAT Prep + App Support includes 200+ Videos, 3500+ Questions, 15 FLTs + more
	GMATWhiz - $299 ~~$499~~ Experience the course through a free trial.
	GMAT Club Tests - Free Included with every course purchase of $149+ View all deals

Practice Questions Chat

Prep Toolkit

My Rewards