In the coordinate system above, which of the following…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We start by defining the equation of line l using the slope-intercept form of a line (y = mx + b), where m = …
Tag: GMAT OG 2018
For the past n days, the average (arithmetic mean) daily production…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We start with the formula for calculating the average. average = sum/quantity We are given that the initial quantity is n days and that …
0.99999999/1.0001 – 0.99999991/1.0003 =
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: When first looking at this problem, we must consider the fact that 0.99999999/1.0001 and 0.99999991/1.0003 are both pretty nasty-looking fractions. However, this is a …
From the consecutive integers -10 to 10, inclusive…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: This problem is testing our knowledge of the multiplication rules for positive and negative numbers. Remember that when we multiply an even number of …
What is the difference between the sixth and the fifth terms…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: For the sixth term, we need to substitute 6 for n, and for the fifth term, we need to substitute 5 for n. Then …
Seven pieces of rope have an average (arithmetic mean) length of 68 centimeters…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We need to first recognize that we are working with a maximum problem. This means that of the seven pieces of rope, we must …
A photography dealer ordered 60 Model X cameras…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that a dealer ordered 60 cameras to be sold for $250 each. This is a 20% markup over the initial cost …
Of the 300 subjects who participated in an experiment using…
May 7, 2015
Of the 300 subjects who participated in an experiment using… Solution: This is a 3-circle Venn Diagram problem. Because we do not know the number of unique items in …