Here is a simple descriptive statistics question. Question When a student Joe, weighing 41 kg, joins a group of students whose average weight is 30 kg, the average weight goes up by 1 kg. Subsequently, if two students, excluding Joe, leave the group the average weight comes back to 30 kg. What is the difference between the average weight of the two students who left and the … [Read more...] about GMAT Problem Solving : Descriptive Statistics

# GMAT Quant Theory & Practice Questions

## GMAT DS : Number Properties : Even numbers

Is the positive integer x even?1. (x - 1) is a prime number2. (x^2 - 1) is a prime number … [Read more...] about GMAT DS : Number Properties : Even numbers

## GMAT DS : Percents, Profits

QuestionTwo products A and B that cost $2000 and $1000 respectively were marked up with a profit of x%. What is x?1. If a discount of (2x/5)% is offered on the marked price of product A and if product B is sold at the marked price, the profit made on both products will be the same.2. If the markup on Product A is half that of product B, the profit made on both the products will … [Read more...] about GMAT DS : Percents, Profits

## Linear Equations : Common Multiples

QuestionA shop sells two variants of chocolates - one that costs $3 and the other that costs $5. If the shop sold $108 chocolates on a given day, how many different combinations of (number of $3 sold, number of $5 sold) exist?A. 6B. 7C. 15D. 8E. 12Correct Answer : Choice D. 8Explanatory AnswerLet the shop sell x numbers of the $3variant and y numbers of the $5 variant.So, 3x + … [Read more...] about Linear Equations : Common Multiples

## Number Properties : LCM, HCF

This question is a relatively easy question on LCM and HCF of two numbers. QuestionIf the product of two positive integers is 144, which of the following could be the LCM and HCF of the two numbers?I. LCM : 24; HCF : 6II. LCM : 18; HCF : 8 III. LCM : 16; HCF : 9A. I onlyB. II and III only C. I and II onlyD. I and III only E. I, II and IIICorrect Answer : Choice … [Read more...] about Number Properties : LCM, HCF