If x and y are integers, and 4x + 5y = 19, which of . . .

Expert replies

Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Tue Dec 26, 2017 5:40 am

If x and y are integers, and 4x + 5y = 19, which of the following could be the value of x?

A. 1

B. 2

C. 3

D. 4

E. 5

The OA is the option A.

The way to solve this PS question is replacing the values in x? Is there another way to solve it?

Like this post

Source: Beat The GMAT — Problem Solving | Tue Dec 26, 2017 5:40 am

GMAT/MBA Expert

[email protected]: Elite Legendary Member; Posts: 10392; Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members; Location: Palo Alto, CA; Thanked: 2867 times; GMAT Score:800

by [email protected] » Tue Dec 26, 2017 8:51 am

Hi Vincen,

We're told that X and Y are integers, and 4X + 5Y = 19. We're asked which of the following COULD be the value of X.

This question is perfect for TESTing THE ANSWERS - one of those numbers MUST be a solution to the given equation (note: we're told that BOTH variables are INTEGERS, so when you TEST a value for X, the corresponding value of Y must also be an integer). When you plug-in a value of X and find the corresponding Y or plug in the Y and find the corresponding value for X, the equation is relatively "small", so it shouldn't take too long to do the basic arithmetic and find the solution.

Final Answer: A

GMAT assassins aren't born, they're made,
Rich

Contact Rich at [email protected]

Like this post

GMAT/MBA Expert

Scott@TargetTestPrep: GMAT Instructor; Posts: 8153; Joined: Sat Apr 25, 2015 10:56 amFollowed by: 29 members; Location: Los Angeles, CA; Thanked: 43 times

by Scott@TargetTestPrep » Thu Sep 05, 2019 5:12 am

Vincen wrote:If x and y are integers, and 4x + 5y = 19, which of the following could be the value of x?

A. 1

B. 2

C. 3

D. 4

E. 5

The OA is the option A.

The way to solve this PS question is replacing the values in x? Is there another way to solve it?

If x = 1, then y = 3 will satisfy the equation 4x + 5y = 19.

Answer: A

Scott Woodbury-Stewart
Founder and CEO
[email protected]

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

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