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 →

Which of the following statements can be inferred from the

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 79
Joined: Tue Dec 15, 2015 3:56 amFollowed by: 1 member
GMAT Score:750
by Nina1987 » Fri Dec 25, 2015 11:26 pm
Which of the following statements can be inferred from the data above?

I. The Klein family's annual income more than doubled from 1985 to 1995.
II. The Klein family's annual income increased by a greater amount from 1985 to 1990 than from 1990 to 1995.
III. The Klein family's average (arithmetic mean) annual income for the period shown was greater than $40,000.

A. I only
B. II only
C. I and III only
D. II and III only
E. I, II, and III

These question tend to waste my time a lot. Are there any clever strategies to solve them in 2/2.30 mins? Thanks
Attachments
Capture.PNG
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members
Location: India
Thanked: 267 times
GMAT Score:760

by sanju09 » Sat Dec 26, 2015 5:03 am
Nina1987 wrote:Which of the following statements can be inferred from the data above?

I. The Klein family's annual income more than doubled from 1985 to 1995.
II. The Klein family's annual income increased by a greater amount from 1985 to 1990 than from 1990 to 1995.
III. The Klein family's average (arithmetic mean) annual income for the period shown was greater than $40,000.

A. I only
B. II only
C. I and III only
D. II and III only
E. I, II, and III

These question tend to waste my time a lot. Are there any clever strategies to solve them in 2/2.30 mins? Thanks
Process of elimination while working with each statement saves time and effort on such problems.

I. The Klein family's annual income more than doubled from 1985 to 1995.

In 1985, it was 25, and in 1995, it was just below 65. Clearly, it's more than double as compared to 1985. Hence, the statement (I) is correct. So, let's eliminate options that do not include (I). B and D get eliminated.

II. The Klein family's annual income increased by a greater amount from 1985 to 1990 than from 1990 to 1995.

Increase from 1985 to 1990 is 40 - 25 = 15, and increase from 1990 to 1995 is about 65 - 40 = 25. The statement (II) tells opposite of it. Hence, eliminate from the remaining options one that do include (II), (E) gets eliminated.

III. The Klein family's average (arithmetic mean) annual income for the period shown was greater than $40,000.

Rough estimation tells us that most of the readings are around 40 or fairly above 40. Hence, the average (arithmetic mean) annual income for the period shown will be greater than 40. Hence, only [spoiler](I) and (III) are correct.

Choose (C).[/spoiler]


A. I only
B. II only
C. I and III only
D. II and III only
E. I, II, and III
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 79
Joined: Tue Dec 15, 2015 3:56 amFollowed by: 1 member
GMAT Score:750

by Nina1987 » Sat Dec 26, 2015 7:12 am
sanju09 wrote:

Rough estimation tells us that most of the readings are around 40 or fairly above 40. Hence, the average (arithmetic mean) annual income for the period shown will be greater than 40. Hence, only [spoiler](I) and (III) are correct.


pls can you elaborate on this point? thks
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members
Location: India
Thanked: 267 times
GMAT Score:760

by sanju09 » Sun Dec 27, 2015 1:16 am
Nina1987 wrote:
sanju09 wrote:

Rough estimation tells us that most of the readings are around 40 or fairly above 40. Hence, the average (arithmetic mean) annual income for the period shown will be greater than 40. Hence, only [spoiler](I) and (III) are correct.


pls can you elaborate on this point? thks


A quick rough summation of the 10 readings in the descending order would ensure the sum is more than 400 even when we haven't added them all; hence the average is more than 40.
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

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