In Mr. Smith’s class, what is the ratio of…
October 30, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine the ratio of the number of boys to the number of girls. If we denote the number of boys as …
Tag: GMAT OG 2018
On a recent trip, Mary drove 50 miles. What was the average…
October 30, 2015
GMAT OFFICIAL GUIDE DS Solution: We are being tested on average speed. The formula for average speed is: average speed = total distance/total time We are given that the …
The number of seats in the first row of an auditorium is 18…
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that there are 18 seats in the first row of an auditorium and that in each row after the first there …
What is the cube root…
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine the cube root of w. Thus, if we have a value for w, we can determine the value of the …
Water is pumped into a partially filled tank at a constant…
October 29, 2015
GMAT OFFICIAL GUIDE DS We are given that water is flowing into a tank through an inlet pipe and out of the tank through an outlet pipe. We need …
In the xy -plane above, if the graph above line l is reflect…
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given a triangle in the coordinate plane, and we must determine whether angle QPR is a right angle. Remember that a right …
If Pat saved $600 of his earnings last month, how much did…
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that Pat saved $600 worth of his earnings, and we need to determine how much he earned last month. Statement One …
In College X the number of students enrolled in both a…
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: An easy way to solve this problem is to set up a double set matrix. In our matrix, we have two main categories: biology …