# GMAT Question of the Day (June 19): Arithmetic and Critical Reasoning

- Jun 19, 02:00 AM   Comments [0]

Math (DS) If , what is ? 1. is an integer 2. is an integer Question Discussion & Explanation Correct Answer - E - (click and drag your mouse to see the answer) GMAT Daily Deals Get $100 off a Manhattan GMAT course (and an extra$250 bonus) with the...

# GMAT Question of the Day (June 15): Mixture Problem and Sentence Correction

- Jun 15, 02:00 AM   Comments [0]

Math (DS) grams of water were added to 80 grams of a strong solution of acid. If as a result, the concentration of acid in the solution became times of the initial concentration, what was the concentration of acid in the original solution? 1. 2....

# GMAT Quant: How to Solve Two Equations with Two Variables

- Jun 12, 09:00 AM   Comments [0]

Fact: If you have two variables and only one equation, in general you will not be able to solve for the individual values of the variables.  You need two separate equations in order to solve for the individual values of each of two variables. (This...

# GMAT Question of the Day (June 12): Coordinate Geometry and Sentence Correction

- Jun 12, 02:00 AM   Comments [0]

# GMAT Question of the Day (June 7): Geometry and Critical Reasoning

- Jun 7, 02:00 AM   Comments [0]

Math (DS) Water evaporates at the rate of two liters per hour per one square meter of surface. How long will it take to evaporate 30 liters of water from a swimming pool full of water with vertical walls and a flat bottom that holds 56...

# GMAT Math: Special Properties of the Line y = x

- Jun 4, 09:00 AM   Comments [0]

The 45º angle Fact: All lines with slopes of 1 make 45º angles with both the x- and y-axes. Conversely, if a line makes a 45º angles with either the x- of y-axes, you know immediately its slope must be . This first fact is true, not only...

# GMAT Quant: Difference of Two Squares

- May 31, 09:00 AM   Comments [0]

You may remember this formula, one of the sleekest factoring tricks in all of algebra: This formula, called “the difference of two squares” formula, is a favorite of standardized test writers.  A simple enough pattern: see if you can detect where it shows up in the...

# GMAT Question of the Day (May 31): Algebra and Critical Reasoning

- May 31, 02:00 AM   Comments [1]

Math (DS) If is a positive integer, is \sqrt{x} < 2.5x - 5[/latex] ? 1. $x < 3$ 2. $x$ is a prime number Question Discussion & Explanation Correct Answer - A - (click and drag your mouse to see the answer) GMAT Daily Deals Knewton Gmat: Highly qualified instructors. >...