If it takes longer for students to complete their degree, then a larger number of people enrolled in college does not mean that the number of students graduating per year will increase. For example, if the average time enrolled has increased from 4 to 6 years, only 1/6 of the student body will grad...

Here is a slighly improved version of dkiran01 grid.
You just set the number of questions, and it will automatically set the correct number of minutes you are alloted.
It will also give you the question in which you should be.

Thanks for the answers. Here is a way of representing the problem: There are 2 empty slots and enough white plates to fill them. _ _ Thus, there are 2 white plate out of wich you have to choose blue plates: W W You can choose zero or 1 blue plate: - from 2 white plates, choose zero blue plates (2C0 ...

Thanks for your answers!

Sorry, the questions is the following one (the ratio is 11:4 and not 11:14) : A movie buff owns movies on DVD and on Blu-ray in a ratio of 7:2. If she buys 6 more Blu-ray movies, that ratio would change to 11:4. If she owns movies on no other medium, what was the original number of movies in her lib...

Mickey and Donald choose a plate...

From a pile of 4 plates, 3 undistinguishable whites plates and 1 blue plate, Mickey and Donald choose a plate. How many arrangements are there? My answer would be : {Mickey | Donald} : {W, W}, {W, B}, {B, W}. However, I can't manage to use the formulas to calculate it. Is there a way to formalize th...

The original question (GMATPrep practice test 1, question 19) is:

"In the xy plane, at what two points does y = (x + a)(x + b) intersect the x axis? "

So answer is C.