BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

\[ \frac{19^2+19}{20}= \]

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Legendary Member
Posts: 2276
Joined: Sat Oct 14, 2017 6:10 amFollowed by: 3 members
by VJesus12 » Fri May 11, 2018 7:24 am

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty—

$$\frac{19^2+19}{20}=$$ A. 19/10
B. 57/20
C. 19
D. 38
E. 361

The OA is the option C.

What is the fastest way to solve this PD question? May someone clarifies this to me? Thanks.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members
Location: Vancouver, BC
Thanked: 5254 times
GMAT Score:770

192+1920=

by Brent@GMATPrepNow » Fri May 11, 2018 7:52 am
VJesus12 wrote:$$\frac{19^2+19}{20}=$$ A. 19/10
B. 57/20
C. 19
D. 38
E. 361
Notice that we can factor 19 from the numerator.

(19² + 19)/20 = (19)(19 + 1)/20
= (19)(20)/20
= 19

Answer: C

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 2898
Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members
Thanked: 6 times

by Vincen » Fri May 11, 2018 8:07 am
VJesus12 wrote:$$\frac{19^2+19}{20}=$$ A. 19/10
B. 57/20
C. 19
D. 38
E. 361

The OA is the option C.

What is the fastest way to solve this PD question? May someone clarifies this to me? Thanks.
Hello Vjesus12.

Here the best way is taking 19 as a common factor as follows: $$\frac{19^2+19}{20}=\frac{19\left(19+1\right)}{20}=\frac{19\cdot20}{20}=19.$$ This way, we get the answer straightforward. Hence, the correct answer is the option C.

I hope this explanation may help you.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 8152
Joined: Sat Apr 25, 2015 10:56 amFollowed by: 29 members
Location: Los Angeles, CA
Thanked: 43 times

by Scott@TargetTestPrep » Tue May 21, 2019 6:29 pm
VJesus12 wrote:$$\frac{19^2+19}{20}=$$ A. 19/10
B. 57/20
C. 19
D. 38
E. 361
The two terms in the numerator have a common factor of 19. Factoring it and simplifying, we have:

19(19 + 1)/20 = 19(20)/20 = 19

Answer: C

Scott Woodbury-Stewart
Founder and CEO
[email protected]

Image

See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews

ImageImage
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1