2015 OG Quant Review PS #15. If 60 percent of a rectangular floor is covered by a rectangular rug that is 9 feet by 12 feet, what… Read more “Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #15)”

## Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #20)

2015 OG Quant Review PS #20. (1 + √5) (1 – √5) = Math Lessons: (1) Factor a difference of squares, a² – b² = (a+b)(a–b) and apply… Read more “Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #20)”

## Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #18)

2015 OG Quant Review PS #18. If X and Y are sets of integers, X∆Y denotes the set of integers that belong to set X or set… Read more “Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #18)”

## Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #17)

2015 OG Quant Review PS #17. The value of –3 – (–10) is how much greater than the value of –10 – (–3)? Math Lessons: (1) Translate… Read more “Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #17)”

## Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #16)

2015 OG Quant Review PS #16. Three machines, individually, can do a certain job in 4, 5, and 6 hours, respectively. What is the greatest part of… Read more “Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #16)”

## Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #13)

2015 OG Quant Review PS #13. The number of rooms at Hotel G is 10 less than twice the number of rooms at Hotel H. If the… Read more “Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #13)”

## Shawn Berry’s Criticism of The Official Guide for GMAT Review (2015 Quant Review, Problem Solving #10)

2015 OG Quant Review PS #10. If there are 664,579 primes among the first 10 million positive integers, approximately what percent of the first ten million positive… Read more “Shawn Berry’s Criticism of The Official Guide for GMAT Review (2015 Quant Review, Problem Solving #10)”

## Shawn Berry’s Criticism of The Official Guide for GMAT Review (2015 Quant Review, Problem Solving #3)

2015 OG Quant Review PS #3. If Mario was 32 years old 8 years ago, how old was he x years ago? Original equation not counted as… Read more “Shawn Berry’s Criticism of The Official Guide for GMAT Review (2015 Quant Review, Problem Solving #3)”

## Shawn Berry’s Criticism of The Official Guide for GMAT Review (2015 Quant Review, Problem Solving #2)

2015 OG Quant Review PS #2. If x/4 is 2 more than x/8, then x = . Note: Original equation is not counted as a line… Read more “Shawn Berry’s Criticism of The Official Guide for GMAT Review (2015 Quant Review, Problem Solving #2)”

## Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #1)

2015 OG Quant Review PS #1. The maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the… Read more “Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #1)”