Last visit was: 25 Apr 2026, 12:17 It is currently 25 Apr 2026, 12:17
Close
GMAT 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 GMAT 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.
Close
Request Expert Reply
Confirm Cancel
Sub 505 (Easy)|   Arithmetic|                        
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 25 Apr 2026
Posts: 109,830
Own Kudos:
811,251
 [1]
Given Kudos: 105,885
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,830
Kudos: 811,251
 [1]
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 25 Apr 2026
Posts: 109,830
Own Kudos:
Given Kudos: 105,885
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,830
Kudos: 811,251
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
bhatiamanu05
Joined: 19 Apr 2013
Last visit: 03 Aug 2017
Posts: 55
Own Kudos:
205
 [1]
Given Kudos: 9
Concentration: Entrepreneurship, Finance
GMAT Date: 06-05-2015
GPA: 3.88
WE:Programming (Computer Software)
Posts: 55
Kudos: 205
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
WoundedTiger
Joined: 25 Apr 2012
Last visit: 03 Jan 2026
Posts: 520
Own Kudos:
Given Kudos: 740
Location: India
GPA: 3.21
WE:Business Development (Other)
Products:
Posts: 520
Kudos: 2,584
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Attachment:
untitled.PNG
untitled.PNG [ 5.94 KiB | Viewed 22570 times ]
In the figure above, the sum of the three numbers in the horizontal row equals the product of the three numbers in the vertical column . What is the value of xy ?

(A) 6
(B) 15
(C) 35
(D) 75
(E) 90


Sol: Given that sum of Horizontal numbers (37+38+15=90)= Product of 15*x*y
So the product of xy= 90/15 =6
Ans A
User avatar
susheelh
Joined: 12 Jun 2016
Last visit: 13 Jun 2018
Posts: 144
Own Kudos:
Given Kudos: 151
Location: India
Concentration: Technology, Leadership
WE:Sales (Telecommunications)
Posts: 144
Kudos: 298
Kudos
Add Kudos
Bookmarks
Bookmark this Post
This question can also be done just by looking at unit digits. Unit Digit of horizontal is 0 (7+5+8). Vertical is 15xy. So, the unit digit of xy when multiplied with 5 should give a 0. Only possible option is 6. Rest all options give a 5 as unit digit.

Answer choice: A
User avatar
Kinshook
User avatar
Major Poster
Joined: 03 Jun 2019
Last visit: 25 Apr 2026
Posts: 5,986
Own Kudos:
Given Kudos: 163
Location: India
GMAT 1: 690 Q50 V34
WE:Engineering (Transportation)
Products:
GMAT 1: 690 Q50 V34
Posts: 5,986
Kudos: 5,859
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
The Official Guide For GMAT® Quantitative Review, 2ND Edition

Attachment:
Untitled.png
In the figure above, the sum of the three numbers in the horizontal row equals the product of the three numbers in the vertical column . What is the value of xy ?

(A) 6
(B) 15
(C) 35
(D) 75
(E) 90

Problem Solving
Question: 19
Category: Arithmetic Operations on rational numbers
Page: 64
Difficulty: 550

GMAT Club is introducing a new project: The Official Guide For GMAT® Quantitative Review, 2ND Edition - Quantitative Questions Project

Each week we'll be posting several questions from The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.

We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.

Thank you!

37 + 38 + 15 = 15xy
90 = 15xy
xy =6

IMO A
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,985
Own Kudos:
Posts: 38,985
Kudos: 1,118
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderators:
Math Expert
109830 posts
Tuck School Moderator
852 posts