All GRE Math Resources
Example Questions
Example Question #13 : Proportion / Ratio / Rate
16 ounces of lemonade mix makes 2 gallons of lemonade (one gallon is equivalent to 4 quarts).
Quantity A: Amount of mix needed to make 3 quarts of lemonade
Quantity B: 6 ounces of mix
Quantity A is greater
The two quantities are equal
Quantity B is greater
The relationship cannot be determined from the information given
The two quantities are equal
2 gallons of lemonade equals 8 quarts of lemonade. To make 3 quarts of lemonade, you need of the amount needed to make 2 gallons of lemonade, or 6 ounces of mix.
Example Question #15 : Proportion / Ratio / Rate
In a class with students, if are taking Calculus and are taking Chinese, what is the lowest amount of students possible in the class that are taking both Calculus and Chinese?
This problem states that there are students in the class taking Calculus. Because the class has a total of students, that means there are only students in the class not taking Calculus. The problem also states that there are students in the class taking Chinese. Because only students in the class aren't taking Calculus, this means that there is a minimum of students in the class that are taking both Calculus and Chinese.
Example Question #14 : Proportion / Ratio / Rate
If an a train is traveling at 8 feet per second, how many feet does it travel in 2 hours?
For this problem, you must do conversions of from hours to seconds.
Two hours is equal 120 minutes
.
120 minutes is equal to 7200 second
.
The train travels 8 feet per second so in 7200 seconds it travels 57600 feet
.