A store currently charges the same price for each towel…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We can start by creating some variables. Q = quantity of towels sold P = price per towel sold Next we can set up …
Tag: Official Guide for GMAT Review 2016
In the rectangular coordinate system above, the line y = x…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: This problem does contain a diagram that looks like the following: We are given that the line y = x is a perpendicular bisector …
The ratio, by volume, of soap to alcohol to water in a…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: The first thing we want to do is set up the ratio of the original solution using variable multipliers. soap : alcohol : water …
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 …
Of the final grades received by the students in a certain math course…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: We start by creating a variable for the total number of students in the math course. We can say: T = Total number of …
The probability is 1/2 that a certain coin will turn up heads…
May 7, 2015
GMAT OFFICIAL GUIDE PS Solution: In this problem, there are only two events that could occur for the 3 coin flips. Either the coin will land on tails zero …
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 …