Each person who attended a company meeting was either…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: This is an overlapping set question, and a good way to solve it is to set up a table with two categories: stockholder and …
The sum of all the integers k…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We must determine the sum of the consecutive integers from -25 to 23, inclusive. To determine the sum we can use the formula sum …
A certain high school has 5000 students. Of these students, x are
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given an overlapping set with 2 categories: music and art. In any two-category set problem we can use the following formula: Total …
The number line shown contains three points R, S, and T…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: Looking at the given number line, we see that point R is to the left of zero and points S and T are to …
For a party, three solid cheese balls with diameters of 2 inches
May 10, 2016
GMAT Guide Solution: We first need to determine the volume of each individual cheese ball. We have 3 cheese balls of diameters of 2, 4, and 6 inches, respectively. …
√(4.8 x 10^9) is closest in value to…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given √(4.8 x 10^9), and we need to determine the answer choice that is closest in value. We first simplify the expression …
If xy ≠ 0 and x^2y^2 − xy = 6, which of the following could be y in…
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given the equation, (x^2)(y^2) – xy = 6, and, although it may not be obvious, the equation is a quadratic-format equation. Thus, …
The cost C, in dollars, to remove p percent of a certain pollutant
May 10, 2016
GMAT OFFICIAL GUIDE PS Solution: The cost to remove 90 percent of the pollutant is determined by letting p = 90 in the cost formula: 100,000(90)/(100 – 90) = …