If the average (arithmetic mean) of four different numbers is 30…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that the average of 6 numbers in a list is 75. Using this information we see that the sum of the …
Quadrilateral RSTU shown above is a site plan for a parking lot in…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given a diagram of quadrilateral RSTU. Let’s sketch it below: We are given that RU is parallel to side ST and that …
Are all of the numbers in a certain list of 15 numbers equal
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether all of the numbers in the certain list of 15 numbers are equal. Statement One Alone: The sum of …
Beginning in January of last year, Carl made…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that in January Carl made deposits of $120 into his account on the 15th of each month for several consecutive months and then …
When a player in a certain game tossed a coin a number…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that when a coin was tossed a certain number of times, 4 more heads than tails resulted. If we let H …
Last year, a certain company began manufacturing product X…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that the expenses for manufacturing product X were $100,000 plus 5% of the total revenue from all units of product X …
If Juan had a doctor’s appointment on a certain day, was the…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether Juan’s appointment was on Wednesday. Statement One Alone: Exactly 60 hours before the appointment, it was Monday. Although we …
In Jefferson School, 300 students…
May 5, 2016
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: study …