Near Chicago a newly built hydroponic spinach “factory,� a completely controlled environment for growing spinach, produces on 1 acre of floor space what it takes 100 acres of fields to produce. Expenses, especially for electricity, are high, however, and the spinach produced costs about four ti...

Francine's trip

I know this question has been posted before, but I'm looking for some other approaches. During a trip, Francine traveled x percent of the total distance at an average speed of 40MPH and the rest of the distance at an average speed of 60MPH. In terms of x, what was Francine's average speed for the en...

Just so you know you site says this "GMAT Cheatsheet will increasy your score as you will remember and use math formulas". I don't know what increasy is... did you mean increase maybe?

Doesn't sounds like such a reliable product....

Does the integer x have 3 or more distinct positive factors? (1) x is odd (2) 23<x<29 The correct answer is B and here's why: The question stem asks if x has 3 or more different positive factors. This will happen when x is not prime. 1. x is odd. x could be any integer, prime or not prime. Insuffic...

Since 1986 enrollments of African Americans, American Indians, and Hispanic Americans in full-time engineering programs in the United States has steadily increased, while the number of other students who enter the field has fallen. (A) has steadily increased, while the number of other students who ...

For starters please use spoiler when typing the OA, also save your questions till the end. This way people can have a chance at answer the questions for themselves before they know the answer. That is the point of this site, so everyone can learn from one another. That being said, these two problems...

Is line l parallel to the y-axis? (1) The equation of line l is x = 4. (2) The points (4. 2) and (4, - 5) are on line l . For a line to be parallel to the y-axis we need either 1 of 2 things. 1. The equation of the line needs to be x= some number or 2. The slope needs to be undefined (or vertical)....

On level farmland, two runners leave at the same time from the intersection of two country roads. One runner jogs due north at a constant rate of 8 miles per hour while the second runner jogs due east at a constant rate that is 4 miles per hour faster than the first runner's rate. How far apart, to...