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 …
Author: Jeff Miller
If Car X followed Car Y across a certain bridge that is 1/2…
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that Car X follows Car Y across a bridge that is ½ mile long. We need to determine the time, in …
If i and j are integers, is i + j an even integer?
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether i + j is an even integer. Remember: even + even = even odd + odd = even Thus, …
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 …
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 …
For which type of investment, J or K, is the annual rate of…
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine which investment, J or K, provides a greater annual rate of return. That is, we are being asked whether J’s …
Data Sufficiency question about determining if n + 1 is odd
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether n + 1 is odd. Remember, if n is even, then n + 1 will be odd, and if …
A certain expressway has Exits J, K, L and M…
October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: Let’s first put the given information into a diagram. We can also define variables for the distances between J and K, K and L, …