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 …
Tag: Official Guide for GMAT Review 2015
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 …
The table above shows the distance, in kilometers, by the…
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are presented with the following table: We need to determine the value of x. From our table we see that the value of …
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, …
If p1 and p2 are the populations and r1 and r2
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given the following: p_1 = population of District 1 p_2 = population of District 2 r_1 = the numbers of representatives of …
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 …
Is 4^(x + y) = 8^(10) ? (1) x – y = 9 (2) y/x = 1/4
October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether 4^(x+y) = 8^10. We start by breaking down our two bases into prime factors. 4^(x+y) = (2^2)^(x+y) = 2^(2x+2y) …
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 …