cash register

Expert replies

nervesofsteel: Legendary Member; Posts: 594; Joined: Thu Aug 14, 2008 11:51 pm; Thanked: 12 times

by nervesofsteel » Thu Jun 11, 2009 3:24 pm

A cash register in a certain clothing store is the same distance from two dressing rooms in the store. If the distance between the two dressing rooms is 16 feet, which of the following could be the distance between the cash register and either dressing room?

I. 6 feet
II. 12 feet
III. 24 feet

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

OAE

Like this post

Source: Beat The GMAT — Problem Solving | Thu Jun 11, 2009 3:24 pm

ssmiles08: Master | Next Rank: 500 Posts; Posts: 472; Joined: Sun Mar 29, 2009 6:54 pm; Thanked: 56 times

by ssmiles08 » Thu Jun 11, 2009 3:45 pm

If you make an isosceles triangle with d---d = 16 and the other two lines as x and x.

If 6 is x , the other length must at least be greater than 10 (16-6). Since we know the other length is also 6, and this is less than 10, this cannot be true.

12 works because the smallest length can be 4 and the biggest length can be (16+12) = 28. Since 12 falls into this category, 12 is a possible distance.

24 also works. 24-16 = 8 (smallest length) (24+16) = 40. We know x is 24, so 8 < 24 < 40.

Therfore it is (E)

Like this post

nervesofsteel: Legendary Member; Posts: 594; Joined: Thu Aug 14, 2008 11:51 pm; Thanked: 12 times

by nervesofsteel » Thu Jun 11, 2009 4:33 pm

ssmiles08 wrote:If you make an isosceles triangle with d---d = 16 and the other two lines as x and x.

If 6 is x , the other length must at least be greater than 10 (16-6). Since we know the other length is also 6, and this is less than 10, this cannot be true.

12 works because the smallest length can be 4 and the biggest length can be (16+12) = 28. Since 12 falls into this category, 12 is a possible distance.

24 also works. 24-16 = 8 (smallest length) (24+16) = 40. We know x is 24, so 8 < 24 < 40.

Therfore it is (E)

Thanks i forgot didn't use the properties of triangle....

a+b > c

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

560 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review