Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

#GREpracticequestion comparison a+b or c+d.jpg [ 5.26 KiB | Viewed 871 times ]

Quantity A

Quantity B

a + b

c + d

A) Quantity A is greater. B) Quantity B is greater. C) The two quantities are equal. D) The relationship cannot be determined from the information given.

A) Quantity A is greater. B) Quantity B is greater. C) The two quantities are equal. D) The relationship cannot be determined from the information given.

Okay, so I don't know why it is A? I thought it was D? I thought not drawn to scale is why it would be D? Can you please explain?

Since (a, b) is on the positive portion of the x-axis. a is positive and b= 0; so a + b is positive. Also, since (c, d) is on the negative portion of the axis, c is negative and d= 0; so c+d is negative. Quantity A is greater.
_________________

A) Quantity A is greater. B) Quantity B is greater. C) The two quantities are equal. D) The relationship cannot be determined from the information given.

Let's examine each point.

(a, b) This point is on the x-axis, which means its y-coordinate = 0 So, b = 0 Also, since the point lies to the RIGHT of the origin (0,0), its x-coordinate is POSITIVE So, a is some POSITIVE NUMBER

(c, d) This point is on the y-axis, which means its x-coordinate = 0 So, c = 0 Also, since the point lies BELOW the origin (0,0), its y-coordinate is NEGATIVE So, d is some NEGATIVE NUMBER

So, we get: Quantity A: a + b = some POSITIVE NUMBER + 0 Quantity B: c + d = some NEGATIVE NUMBER + 0

Simplify: Quantity A: some POSITIVE NUMBER Quantity B: some NEGATIVE NUMBER