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

Redeem

If x = 5 – 4k and y = 5k – 3, then for what value of k d

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 » Tue Apr 30, 2019 6:37 am
M7MBA wrote:If \(x = 5 - 4k\) and \(y = 5k - 3,\) then for what value of \(k\) does \(x = y?\)

(A) 0
(B) 8/9
(C) 9/8
(D) 2
(E) 8
We want: x = y
Replace values with their equivalents: 5 - 4k = 5k - 3
Add 4k to both sides: 5 = 9k - 3
Add 3 to both sides: 8 = 9k
Divide both sides by 9 to get: 8/9 = k

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 » Thu May 02, 2019 4:18 pm
M7MBA wrote:If \(x = 5 - 4k\) and \(y = 5k - 3,\) then for what value of \(k\) does \(x = y?\)

(A) 0
(B) 8/9
(C) 9/8
(D) 2
(E) 8

[spoiler]OA=B[/spoiler]

Source: Veritas Prep
Since we need to determine the value of k such that x = y, we can equate our two expressions, and we have:

5 - 4k = 5k - 3

8 = 9k

8/9 = k

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