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

Redeem

If the product of the integers w, x, y and z is 770, and if

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Senior | Next Rank: 100 Posts
Posts: 62
Joined: Wed Nov 13, 2019 9:42 pm

by SampathKp » Sun Dec 29, 2019 7:23 pm
BTGmoderatorDC wrote:If the product of the integers w, x, y and z is 770, and if 1 < w < x < y < z, what is the value of w + z?

A. 10
B. 13
C. 16
D. 18
E. 21



OA B

Source: Official Guide
Prime factors of 770 are 2*5*7*11
So 1<2<5<7<11

So of w+z = 2+11 = 13

Answer is B
Top

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 » Mon Dec 30, 2019 6:54 am
BTGmoderatorDC wrote:If the product of the integers w, x, y and z is 770, and if 1 < w < x < y < z, what is the value of w + z?

A. 10
B. 13
C. 16
D. 18
E. 21
This looks like a job for prime factorization!

770 = (2)(5)(7)(11)

If 1 < w < x < y < z, then we can see that w = 2, x = 5, y = 7 and z = 11

So, w + z = 2 + 11 = 13

Answer: B

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 8086
Joined: Sat Apr 25, 2015 10:56 am
Location: Los Angeles, CA
Thanked: 43 times
Followed by:29 members

by Scott@TargetTestPrep » Sun Jan 05, 2020 8:06 pm
BTGmoderatorDC wrote:If the product of the integers w, x, y and z is 770, and if 1 < w < x < y < z, what is the value of w + z?

A. 10
B. 13
C. 16
D. 18
E. 21



OA B

Source: Official Guide
Since 770 = 2 * 5 * 7 * 11, then w = 2, x = 5, y = 7 and z = 11. Therefore, the sum of w and z is 2 + 11 = 13.

Answer: B

Scott Woodbury-Stewart
Founder and CEO
[email protected]

Image

See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews

ImageImage
Top
Post new topic Post Reply
• Page 1 of 1