GMAT Prep - Quant Questions Missed - Pls Help

Oldest

Best Reply

Author

Message

TAGS:

Intern

Joined: 16 Aug 2006

Posts: 12

Followers: 0

Kudos [?]: 0 [0], given: 0

GMAT Prep - Quant Questions Missed - Pls Help [#permalink]

10 Nov 2006, 16:31

Hi All,

Just took my first GMAT Prep practice test and scored a 620 (41V, 32Q).

Some of the quant questions I missed that I could not figure out after reviewing are attached. ANY HELP you can provide regarding the correct solution is appreciated.

I will definately return the favor as I improve!

THANKS :-D

Attachments

gmatprep1_quantmissed.xls [729 KiB]
Downloaded 69 times

To download please login or register as a user

Kaplan Promo Code

Knewton GMAT Discount Codes

Veritas Prep GMAT Discount Codes

Manager

Joined: 22 Jul 2006

Posts: 50

Followers: 0

Kudos [?]: 1 [0], given: 0

[#permalink]

10 Nov 2006, 18:04

Q -3

box 9 = 27
box 6 = 3
box 9* box 8 = 81 = box 27

Q-5

angle abc = 90 degrees
u know BC and AC as 1 and 2 respetively
so u can find AB

q-7

angle ADB = 180-2x
therefore angle ABD = 180-x -(180 -2x)
=x
so AD = BD but we know know BD = BC so only A is necessary

Senior Manager

Joined: 01 Sep 2006

Posts: 308

Location: Phoenix, AZ, USA

Followers: 1

Kudos [?]: 4 [0], given: 0

[#permalink]

10 Nov 2006, 18:04

(1/5)^m*(1/4)^18=(1/(2)(10)^35
What is m
TAking evrything to numberator
5^-m * 2 ^36 (using 4=2*2) = 2^-1 * (2*5)^-35 (using 10=2*5)
=>2^-1*2^-35*5^-35
5^-m*2^-36=2^(-1-35)*5^-35
Cancel out 2^-36 from both the sides
5^-m=5^-35

-m=-35
m=35

Intern

Joined: 29 Dec 2005

Posts: 20

Followers: 0

Kudos [?]: 0 [0], given: 0

[#permalink]

11 Nov 2006, 02:07

9/37

A. Greater than 16 ft/sec = (30 mins * 60 secs * 16 ft = 28800 ft) to infinite Insuff
( since 5280 * 6 = 316800 is in between28800 and infinite )
B Less than 18 ft/sec = between 0 and (30 * 60 * 18 = 32400) Insuff

A & B put together tells us that he cycled between 28800 and 32400 ft which doesnt tell us if it is less than or greater than 6 miles

so E

11/37

break it down to the prime factors

990 = 10 * 99 = 2* 5 * 11 * 9

so the n should be atleast 11

18/37

plug in some values say x= 3, 1-3 = -2 and solve for both 3 and -2 in each of those functions. I cant think of any easy way as I am not good either.

Intern

Joined: 16 Aug 2006

Posts: 12

Followers: 0

Kudos [?]: 0 [0], given: 0

[#permalink]

12 Nov 2006, 11:14

thanks all for your help!

GMAT Instructor

Joined: 04 Jul 2006

Posts: 1278

Location: Madrid

Followers: 9

Kudos [?]: 69 [0], given: 0

[#permalink]

12 Nov 2006, 11:30

At what speed would he need to go to travel exactly 6 miles in 30 minutes?

6*5280 feet in 30*60 seconds= 5280/300 ft/sec, which is between 17 and 18 feet per second

Intern

Joined: 16 Aug 2006

Posts: 12

Followers: 0

Kudos [?]: 0 [0], given: 0

[#permalink]

12 Nov 2006, 12:25

had one of those "duh" moments after reading the responses regarding number 9. classic problem of not reading what the questions is really asking for

[#permalink] 12 Nov 2006, 12:25

		Similar topics	Author	Replies	Last post
Similar Topics:		GMAT Prep Question - PLS help!!! SC	willget800	8	05 Aug 2006, 17:39
		GMAT Prep Quant Questions - Please Help	zippo	1	28 Oct 2006, 11:06
		GMAT Prep Quant Missed	gmc9907	4	20 Jan 2007, 13:20
	1	Attached are some GMAT Prep 2 Quant Problems that I missed.	burnttwinky	11	11 Apr 2010, 21:15
		Gmat prep Quant Question	sinharohit	1	02 Dec 2012, 06:46

GMAT Prep - Quant Questions Missed - Pls Help

Main navigation

GMAT Resources

Partners

MBA Resources

GMAT ® is a registered trademark of the Graduate Management Admission Council ® (GMAC ®). GMAT Club's website has not been reviewed or endorsed by GMAC.

GMAT Courses

Admissions Consulting

GMAT Prep - Quant Questions Missed - Pls Help

GMAT Prep - Quant Questions Missed - Pls Help

Main navigation

GMAT Resources

Partners

MBA Resources