If x and y are positive, is x < y?
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that x and y are positive and we must determine whether x < 10 < y. Statement One Alone: x < …
Tag: data sufficiency
A clothing store acquired an item at a cost of x dollars
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that a clothing store acquired an item at a cost of x dollars and sold the item for y dollars. We …
If x is an integer…
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether 9^x + 9^-x = b. Statement One Alone: 3^x + 3^-x = √(b+2) We first square both sides of …
If a < x < b and c < y < d, is x < y
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that a < x < b, and that c < y < d. We must determine whether x < y. Statement …
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 …
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 …
Robots X, Y, and Z each assemble components at their…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that r_x = the ratio of robot X’s constant rate to robot Z’s constant rate. If we let A = the …
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 …