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

Redeem

If the population of a certain country is 120,256,000 and its land area is 2,998,000 square kilometers, then the

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Moderator
Posts: 7187
Joined: Thu Sep 07, 2017 4:43 pm
Followed by:23 members

If the population of a certain country is 120,256,000 and its land area is 2,998,000 square kilometers, then the

by BTGmoderatorDC » Mon Jan 31, 2022 5:40 pm
If the population of a certain country is 120,256,000 and its land area is 2,998,000 square kilometers, then the population per square kilometer is closest to which of the following?

A. 4
B. 6
C. 20
D. 40
E. 60


OA D

Source: GMAT Prep
Top
Source: — Problem Solving |

GMAT/MBA Expert

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

Re: If the population of a certain country is 120,256,000 and its land area is 2,998,000 square kilometers, then the

by Brent@GMATPrepNow » Mon Mar 07, 2022 8:15 am
BTGmoderatorDC wrote: ↑
Mon Jan 31, 2022 5:40 pm
 If the population of a certain country is 120,256,000 and its land area is 2,998,000 square kilometers, then the population per square kilometer is closest to which of the following?

A. 4
B. 6
C. 20
D. 40
E. 60


OA D

Source: GMAT Prep
STRATEGY: This question is a great example of why we should always check the answer choices before committing to a specific solution method (see the video below for more on this).
When we check the answers choices, we see that they are quite spread apart (relatively speaking), which means we can use approximate values to determine the correct answer.

Population per square kilometer = (total population)/(total area in square kilometers)
= 120,256,000/2,998,000
≈ 120,000,000/3,000,000
≈ 120/3
≈ 40

Answer: D

RELATED VIDEO: https://www.youtube.com/watch?v=8GqcJGUVIk4
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Post new topic Post Reply
• Page 1 of 1