A certain high school with a total enrollment of 900 students…
May 19, 2016
GMAT OFFICIAL GUIDE DS Solution: We want to find out the number of students who attended the science fair on all three days. Statement One Alone: Of the students …
Author: Jeff Miller
A store reported total sales of $385 million for February of…
May 17, 2016
GMAT OFFICIAL GUIDE PS Solution: The formula for percent increase is (New – Old)/Old x 100%. Here the “New” sales is $385 million and the “Old” sales is $320 million. …
Working simultaneously at their respective constant rates, Machines…
May 17, 2016
GMAT OFFICIAL GUIDE PS Solution: We have a combined worker problem. In such problems we use the equation: Work (1 machine) + Work (2 machine) = Total Work. We …
In the coordinate plane, a circle has center (2, – 3) and passes
May 17, 2016
GMAT OFFICIAL GUIDE PS Solution: The area of a circle is A = πr^2. If we can find the radius, then we can find the area of the circle. Recall …
In the figure above, PQR and STU are identical equilateral triangles…
May 16, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given a diagram with triangles PQR and STU. We are also given that PQR and STU are identical equilateral triangles, and PQ …
A certain list consists of 3 different numbers. Does the median…
May 16, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that a certain list contains three different numbers. Let’s label these three numbers. a = smallest number b = middle number …
For any positive integer x, the 2-height of x is defined to be the…
May 16, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that for any positive integer x, the 2-height of x is defined to be the greatest nonnegative integer n such that …
A tank is filled with gasoline to a depth of exactly 2 feet…
May 16, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that a tank, resting on its side, has gasoline filled to a depth of 2 feet. We are also given that …