## Basic Geometry Theorem

BASIC PROPORTIONALITY THEOREMIf a line is drawn parallel to one side of a triangle, the other two sides of the triangle are divided proportionally.

Thus, in Fig. DE || BC, According to the above result

## Profit and Loss Formulae

Profit and loss notes are available @ http://www.cat4mba.com/math-e-book/profit-loss Important Formulas for quick reference SP = Sales Price CP = Cost Price MP = Marked Price

## Liquid Mixture

Liquid Mixture

A vessel contains ‘x’ liters of liquid X. ‘y’ liters of liquid are withdrawn from the vessel and is replaced with liquid Y, then another ‘y’ liters of liquid are withdrawn from the vessel and is replaced with liquid Y and the process continues for n times.

## Ratio, Proportion and Variation

Ratio, Proportion and Variation

I have posted 10 questions in forum from this chapter (http://www.cat4mba.com/forum/ratio-proportion-and-variation-1 ) and ‘ll posting 100+ questions in next couple of days.

So enjoying solving the RPV questions.

For the basics please refer to the notes @

## Properties of Median

Properties of Median

The median is a segment that starts at one of the 3 vertices of the triangle and ends at the midpoint of the opposing base.

In the below figure the three medians are Ma=AP, Mb=BQ and Mc=CR.

## Permutations and Combinations

Guys we had a good discussion on Man Hour Work and Time speed Distance. Lets move to the new chapter Permutations and Combinations.

I think it ‘ll be a good idea to solve the questions on these chapters together.  So start posting questions on these two chapters.

Thanks!!!

Note : You can find the basic notes on Permutations @ http://www.cat4mba.com/math-e-book/permutations

## Next chapter: Percentage

For those who are knew The Idea is to solve 20,000 + cat level questions in maths and DI and all the questions on English zone/GK available on this site (I guess new questions/tests are added regularly)

In maths we have had some good discussion on number system and reminders, now let’s move to the next chapter: Percentage