# Rakesh Vishwakarma

An IT (Information Technology) engineer from NIT, Raipur and an MBA from Department of Pune University, Rakesh has been a quantitative aptitude trainer for the past 9 years and has worked with organizations such as PT and Career Launcher; he has the knack of teaching multiple concepts through just one question; many of the questions on this website have been designed by him; he has been getting 99 plus percentile in the CAT (Common Admission Test) for the past four years and has been getting calls from the prestigious IIMs. Apart from teaching quantitative aptitude, he is very fond of coding and programming. ## Relative Speed Concept and Questions for CAT Exam

Relative speed concept is can be of great help in solving many questions from time speed and distance in CAT exam. The concept is particularly critical for problems based on trains, and meeting points The idea is simple to understand, and we mainly need to know the working of the concept in the following cases Two bodies moving … ## Pythagorean Triplets: Concepts Tricks and CAT Problems

If we scan the past CAT questions, then it is quite evident that most of the problems related to triangle required Pythagorean triplets as one of the concepts to solve them. It is such an essential theorem because it applies to a wide variety of questions. In this article will be dealing with the Pythagoras theorem … ## Circular Races: Concepts Tricks and Problems for CAT Exam

Circular races problems have been both exciting and tantalizing to students who prepare for the CAT exam. Often the problems on circular track revolve around finding the number of distinct meeting points or the time required by the runners to meet for the first time at the starting point. Concepts and tricks require to solve … ## HCF and LCM Concepts Formulas and Problems for CAT Exam

HCF and LCM is another very important topic from the number system. The concept is not just restricted to the number system but is also helpful in solving some questions from arithmetic which is a very important topic for CAT exam. In this article, we will take the topic from basics and will try to … ## CAT Number System Syllabus and Preparation Tips

Number system for CAT Number system is the foundation of CAT quantitative aptitude section. Often, students start their preparation of CAT quantitative aptitude from the number system. Number system questions have declined in recent CAT exam. However, I still advocate not to ignore preparation of this topic. The reason is that many areas of quantitative aptitude like …

## Time and Work Concepts for CAT Questions [LCM Method]

Problems based on time and work which are asked in CAT can easily be solved by applying an alternate concept which is the method of LCM. Using LCM method, Time and Work problems which appear in CAT are solved quickly and efficiently. In this article, I will be focusing on the application of this method. …

## Average Speed: Time Speed and Distance

Average speed of an object is defined as the ratio of the total distance covered to the total time taken. Mainly there are two different types of questions based on the concept of average speed. The first type is when a body travels the same distance at different speeds i.e. the distance is constant. And … ## Concept of average and short tricks [Method of Deviation] for CAT Exam

Concept of averages for CAT An average is yet another essential concept for the CAT and other competitive exams. Most of us have a fair understanding of the average or mean. However, the questions from average which appear in competitive exams are tricky and often calculation intensive if we apply the standard approach. In this article, … ## Boats and Streams: Formulas Concepts and Questions for CAT Exam

Boats and Streams is an essential topic for many competitive exams. Many varieties of questions can be framed from this area. We use the fundamental concepts of time speed and distance only to solve elementary questions on Boats and Streams. However, some types of questions are tricky and take lots of time to solve by … ## Profit and Loss: Basic Concepts and Shortcuts for CAT Exam

Profit and loss based problems in CAT can easily be solved by applying the fundamental concepts of percentages. The following basic terms are widely used while solving problems on profit and loss. Hence, a clear understanding of each of these terms is essential. Terminologies in Profit and Loss Cost Price (C.P): The price at which an … X
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