Last visit was: 24 Apr 2026, 05:12 It is currently 24 Apr 2026, 05:12
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
Sub 505 (Easy)|   Arithmetic|                  
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 24 Apr 2026
Posts: 109,811
Own Kudos:
810,956
 [29]
Given Kudos: 105,869
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,811
Kudos: 810,956
 [29]
6(87.30 + 0.65) 5(87.30) = 30 Jul 2018, 00:07
2
Kudos
Add Kudos
27
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

5% (low)

Question Stats:

86% (01:17) correct 14% (01:28) wrong based on 2277 sessions

History

Date
Time
Result
Not Attempted Yet
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85


(PS03887)
ShowHide Answer
Official Answer
D
Need more similar questions? Run a 5 to 10 question quiz in GMAT Club Forum Quiz →
Most Helpful Reply
User avatar
Nikhil
User avatar
Current Student
Joined: 22 May 2017
Last visit: 23 Apr 2026
Posts: 13,441
Own Kudos:
10,101
 [16]
Given Kudos: 3,345
Affiliations: GMATClub
GPA: 3.4
Products:
My Reviews
Posts: 13,441
Kudos: 10,101
 [16]
6(87.30 + 0.65) 5(87.30) = 30 Jul 2018, 00:12
11
Kudos
Add Kudos
5
Bookmarks
Bookmark this Post
6(87.30+0.65)−5(87.30)

=> 6(87.30) + 6(0.65) - 5(87.30)

=> 6(87.30) - 5(87.30) + 6(0.65)

=> 87.30 + 3.9

=> 91.20

Hence option D
User avatar
KSBGC
User avatar
Joined: 31 Oct 2013
Last visit: 10 Mar 2022
Posts: 1,240
Own Kudos:
1,509
 [6]
Given Kudos: 635
Concentration: Accounting, Finance
GPA: 3.68
WE:Analyst (Accounting)
Posts: 1,240
Kudos: 1,509
 [6]
6(87.30 + 0.65) 5(87.30) = 30 Jul 2018, 04:05
4
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
Bunuel
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85


NEW question from GMAT® Quantitative Review 2019


(PS03887)
Show more


87.30 = x

= 6x + 6*0.65 -5x

= x + 3.90

= 87.30 + 3.90

= 91.20

The best answer is B.
General Discussion
User avatar
Bismarck
User avatar
Joined: 18 Jun 2018
Last visit: 15 Mar 2023
Posts: 217
Own Kudos:
481
Given Kudos: 35
Posts: 217
Kudos: 481
6(87.30 + 0.65) 5(87.30) = 30 Jul 2018, 00:12
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85


NEW question from GMAT® Quantitative Review 2019


(PS03887)
Show more

OA: D
\(6(87.30 + 0.65) − 5(87.30) =(6-5)87.30 +6*0.65=87.30+ 3.90= 91.20\)
User avatar
ScottTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 14 Oct 2015
Last visit: 23 Apr 2026
Posts: 22,283
Own Kudos:
26,533
 [4]
Given Kudos: 302
Status:Founder & CEO
Affiliations: Target Test Prep
Location: United States (CA)
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 22,283
Kudos: 26,533
 [4]
6(87.30 + 0.65) 5(87.30) = 10 Aug 2018, 18:50
3
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
Bunuel
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85
Show more

Because answer choices C, D, and E are so close to one another, we cannot use approximate values to solve this arithmetic problem. Expanding the first term and simplifying, we have:

6 x 87.30 + 6 x 0.65 - 5 x 87.30

6 x 87.30 - 5 x 87.30 + 6 x 0.65

87.30(6 - 5) + 3.9

87.3 + 3.9 = 91.2

Answer: D
avatar
rajamech
avatar
Joined: 06 Feb 2017
Last visit: 07 Jun 2020
Posts: 27
Own Kudos:
29
Given Kudos: 5
Location: India
Schools: HBS '22 HEC '22
GMAT 1: 570 Q39 V28
GMAT 2: 620 Q49 V26
GPA: 4
Schools: HBS '22 HEC '22
GMAT 2: 620 Q49 V26
Posts: 27
Kudos: 29
6(87.30 + 0.65) 5(87.30) = 22 Oct 2018, 04:36
Kudos
Add Kudos
Bookmarks
Bookmark this Post
After further solving the given expression we will get 6(87.30) + 6(0.65) - 5(87.30) or 87.3+
3.90= 91.20
hence Ans is D
avatar
audentes
avatar
Joined: 01 Mar 2019
Last visit: 30 May 2020
Posts: 29
Own Kudos:
27
 [1]
Given Kudos: 8
Location: United States
Schools: Owen '22 (M$)
Schools: Owen '22 (M$)
Posts: 29
Kudos: 27
 [1]
6(87.30 + 0.65) 5(87.30) = 24 Mar 2019, 14:36
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
**Distribute the 6 before adding the numbers in parentheses

\(6(87.30+0.65)−5(87.30) \Rightarrow 6(87.30) + 6(0.65) - 5(87.30)\)

\(87.30 + 6(0.65)\)

\(87.30 + 3.90\)

\(91.2\)

Answer D
User avatar
praveen27sinha
User avatar
Joined: 13 Mar 2016
Last visit: 06 Mar 2022
Posts: 41
Own Kudos:
98
Given Kudos: 89
Location: India
Concentration: General Management, Entrepreneurship
WE:General Management (Energy)
Products:
My Reviews
Posts: 41
Kudos: 98
6(87.30 + 0.65) 5(87.30) = 18 Jul 2019, 06:30
Kudos
Add Kudos
Bookmarks
Bookmark this Post
6 x 87.30 + 6 x 0.65 - 5 x 87.30
6 x 87.30 - 5 x 87.30 + 6 x 0.65
87.30(6 - 5) + 3.9
87.3 + 3.9 = 91.2
Ans D
User avatar
Kinshook
User avatar
Major Poster
Joined: 03 Jun 2019
Last visit: 24 Apr 2026
Posts: 5,987
Own Kudos:
5,858
Given Kudos: 163
Location: India
Schools: HBS '26 CBS '26 Wharton '26
GMAT 1: 690 Q50 V34
WE:Engineering (Transportation)
Products:
My Reviews
Schools: HBS '26 CBS '26 Wharton '26
GMAT 1: 690 Q50 V34
Posts: 5,987
Kudos: 5,858
6(87.30 + 0.65) 5(87.30) = 16 Sep 2019, 09:19
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85


NEW question from GMAT® Quantitative Review 2019


(PS03887)
Show more

\(6(87.30 + 0.65) − 5(87.30) = 87.30 + 6*.65 = 87.3 + 3.9 = 91.2\)

IMO D
User avatar
Abhishek009
User avatar
Board of Directors
Joined: 11 Jun 2011
Last visit: 17 Dec 2025
Posts: 5,903
Own Kudos:
5,453
 [1]
Given Kudos: 463
Status:QA & VA Forum Moderator
Location: India
GPA: 3.5
WE:Business Development (Commercial Banking)
Posts: 5,903
Kudos: 5,453
 [1]
6(87.30 + 0.65) 5(87.30) = 16 Sep 2019, 11:34
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85


NEW question from GMAT® Quantitative Review 2019


(PS03887)
Show more

Let \(87.30 = a\)

So, \(6(a + 0.65) − 5a\)

Or, \(6a + 3.90 - 5a\)

Or, \(a + 3.90\)

Substitute the value of a as 87.30 , We have \(a + 3.90 = 87.30 + 3.90 = 91.20\) , Answer must be (D)
avatar
chayon222
avatar
Joined: 01 Sep 2011
Last visit: 25 Feb 2021
Posts: 10
Own Kudos:
24
 [2]
Given Kudos: 43
Posts: 10
Kudos: 24
 [2]
6(87.30 + 0.65) 5(87.30) = 14 Dec 2019, 01:01
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
This problem can be easily solved by adding decimal values

6(87.30+0.65)−5(87.30)
=6(.30+.65) - 5(.30)
=6(0.95)-0.50
=0.70-0.50
=0.20

As among the answer options only one value has 0.20

Ans D
User avatar
CEdward
User avatar
Joined: 11 Aug 2020
Last visit: 14 Apr 2022
Posts: 1,162
Own Kudos:
289
Given Kudos: 332
Posts: 1,162
Kudos: 289
6(87.30 + 0.65) 5(87.30) = 11 Apr 2021, 13:55
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Tried this approach on a total whim. 30 seconds (if only every question was like that)

6(87.30+0.65)−5(87.30)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85

6(87.30+0.65)−5(87.30)
= 6(87.95) - 5(87.30)
87.95 is 0.05 short of a full integer
83.70 is 0.70 short

6 x 0.05 = 0.30
5 x 0.70 = 3.50
0.30 + 3.50 = 3.80

Find the choice that would yield a full integer when you add 3.80 to it.

D.
avatar
sahuanamika
avatar
Joined: 22 May 2021
Last visit: 05 Oct 2021
Posts: 44
Own Kudos:
21
Given Kudos: 107
Posts: 44
Kudos: 21
6(87.30 + 0.65) 5(87.30) = 08 Jun 2021, 04:07
Kudos
Add Kudos
Bookmarks
Bookmark this Post
6(87.30+ 0.65) - 5(87.30)
= 6(87.30) - 5(87.30) + 6(0.65)
= 87.30 + 3.90 = 91.20
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,974
Own Kudos:
1,117
Posts: 38,974
Kudos: 1,117
6(87.30 + 0.65) 5(87.30) = 14 Dec 2024, 09:35
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:
Bunuel
Math Expert
109811 posts
Krunaal
Tuck School Moderator
853 posts