A researcher plans to identify each participant in a certain…
June 26, 2015
GMAT OFFICIAL GUIDE PS Solution: Let’s use the answer choices to help us solve this problem. We are looking for the minimum number of letters that can be used. …
If 3 ＜ x ＜ 100, for how many values of x/3…
June 26, 2015
GMAT OFFICIAL GUIDE PS Solution: An easy way to solve this problem is to first write out all the perfect squares below 100 that result from squaring a prime …
p, r, s, t, uAn arithmetic sequence is a sequence in which each…
June 26, 2015
GMAT OFFICIAL GUIDE PS Solution: The defining factor of an arithmetic sequence is that there is a constant difference d between each successive pair of terms. We are given …
Each • in the mileage table above represents an entry…
June 26, 2015
GMAT OFFICIAL GUIDE PS Solution: This problem can best be solved using combinations. It is similar to a problem in which 30 sports teams are playing in a tournament …
In the figure above, coordinates of point V…
June 26, 2015
In the figure above, coordinates of point V… Solution: Looking at the diagram we can count to the right on the x-axis to get the x-coordinate of V, and …
Running at the same constant rate, 6 identical machines can…
June 26, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve this problem, we first want to determine the rate of each machine. Since each machine works at the same constant rate, each …
The ratio 2 to 1/3 is equal to the ratio
June 26, 2015
GMAT OFFICIAL GUIDE PS Solution: When setting up ratios, we can set up a ratio in fraction form. For example, if we were told the ratio of a to …
150 is what percent of 30
June 26, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve we can create a fairly simple word translation. Remember if we are asked “x is what percent of y”? we can set …