If x and y are positive, is x < y?
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are asked is x/y > 1? Since x and y are positive we can multiply both sides of our inequality by y to …
Author: Jeff Miller
How many people are directors of both Company…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We must determine how many individuals are directors for both Company K and Company R. To solve this “overlapping sets” problem, we can employ …
What is the tenths digit in the decimal representation…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine the value of the tenths place of a particular number. Statement One Alone: The number is less than 1/3. Since …
In a random sample of 80 adults, how many are college…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine the number of college graduates in a sample of 80 adults. Because some of the 80 adults are college graduates, …
Can a certain rectangular sheet of glass be positioned…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether a rectangular sheet of glass can cover an entire rectangular tabletop. We are given that the edges must be …
We are given that the selling price of an article is equal to the cost of the article…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that the selling price of an article is equal to the cost of the article plus the markup. We define some …
A scientist recorded the number of eggs in each of 10 birds…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are asked to determine the standard deviation of the number of eggs in 10 nests. Statement One Alone: The average (arithmetic mean) number …
For the system of equations given, what is the value of z…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given 3 equations: 1) x – 4 = z 2) y – x = 8 3) 8 – z = t We …