## Shawn Berry’s Criticism of the Official Guide for GMAT Review (2015 Quant Review, Problem Solving #15)

2015 OG Quant Review PS #15. If 60 percent of a rectangular floor is covered by a rectangular rug that

## 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,

## 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

## 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

## 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,

## 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

## 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

## 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