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

Redeem

Calculator

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
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

by Brent@GMATPrepNow » Wed Oct 09, 2013 8:49 am
SaraLotfy wrote:0.2% of (3/4)^2 * (160/10^-2)=

A)1.8 * 10^-3
B)1.8 * 10^-2
C)1.8
D)1.8 * 10
E)1.8 * 10^2
Let's rewrite each term as a fraction.

0.2% = 0.2/100 = 2/1000 = 1/500
(3/4)^2 = (3/4)(3/4) = 9/16
(160/10^-2) = 160/(1/100) = 16,000

So, 0.2% of (3/4)^2 * (160/10^-2) = (1/500)(9/16)(16,000)
simplify (9/16)(16,000) to get: = (1/500)(9000)
= 9000/500
= 90/5
= 18
= [spoiler](1.8)(10)[/spoiler]
= D

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
User avatar
GMAT Instructor
Posts: 15539
Joined: Tue May 25, 2010 12:04 pm
Location: New York, NY
Thanked: 13060 times
Followed by:1906 members
GMAT Score:790

by GMATGuruNY » Wed Oct 09, 2013 11:34 am
SaraLotfy wrote:0.2% of (3/4)^2 * (160/10^-2)=

A)1.8 * 10^-3
B)1.8 * 10^-2
C)1.8
D)1.8 * 10
E)1.8 * 10^2
The colored values below CANCEL:

0.2% * (3/4)² * (160/10^-2)

= .2/100 * 9/16 * 160 * 10²

= .2 * 9 * 10

= 2 * 9

= 18.

The correct answer is D.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Top
Post new topic Post Reply
• Page 1 of 1