A straight pipe 1 yard in length was marked off in fourths…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: This problem is best solved by setting up a diagram to represent the markings. We are given that we are marking the pipe into …
Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: This is a great problem because we can solve it using equations and substitution, or we can employ some estimation because the equation we …
Of the 200 students at College T majoring in one or more…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: This is an overlapping set question that is testing our ability to solve for maximum and minimum values. We know this because the answer …
In a certain game, a large container is filled with red, yellow…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: The first thing we want to do is to decipher the problem. The key word here is “product;” we are told that the product …
In an electric circuit, two resistors with resistances x and y…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given the reciprocal of r is equal to the sum of the reciprocals of x and y. Thus we can say: 1/r …
The circle with center C shown above is tangent to both axes…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We begin by creating a right triangle with the x-axis, the radius of circle C to the x-axis and the line segment from center …
If a two-digit positive integer has its digits reversed…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: Let’s first label the original two-digit integer as N. We can then say that N = 10A + B, where A is the tens …
In the coordinate system above, which of the following…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We start by defining the equation of line l using the slope-intercept form of a line (y = mx + b), where m = …