The water from one outlet flowing at a constant rate can fill…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: This problem is called a combined work problem. In these problems we use the formula: Work (of machine 1) + Work (of machine 2) …
On a scale that measures the intensity of a certain phenomenon…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: To solve this problem we need to examine the information in the first sentence. We are told that “a reading of n + 1 …
Water consists of hydrogen and oxygen…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that the ratio of hydrogen to oxygen in water, by mass, is 2 : 16. Using our ratio multiplier we can …
In a certain city, 60% of the registered voters are democrats…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that 60 percent of the voters are Democrats and the rest are Republicans. This means that 40 percent are Republicans. We …
When positive integer x is divided by positive integer y…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: This problem will be best solved using the remainder formula. Let’s first state the remainder formula: When positive integer x is divided by positive …
GMAT OFFICIAL GUIDE PS – If Jake loses 8 pounds, he will weigh twice…
May 6, 2015
If Jake loses 8 pounds, he will weigh twice… Solution: This problem can be solved as a simple word problem in which we must convert words to math. Before …
A ladder of a fire truck is elevated to an angle…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that the ladder of a fire truck is elevated to an angle 60 degrees above the ground and that the ladder …
If Q is an odd number and the median of Q…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that Q is an ODD NUMBER and that the median of Q CONSECUTIVE INTEGERS is 120. Let’s choose a convenient number …