# [CSAT][CAT] Basic Numeracy – Percentages – Multiplying Factor (Tips &Tricks) – 4

Regaining back from our last post : [CSAT][CAT] Basic Numeracy – Percentages – Base (Tips &Tricks) – 3, now lets learn the concept of Multiplying Factor and how relevant it is in calculations of CAT & UPSC CSAT Prelims questions.

**Multiplying Factor :**

If a number for e.g. 200 is increased by 30% what will be the final number ?Final Number = 200 + 30% of 200= 200 + (30/100)x200= 200 + 60= 260.

Final Number = 200 + 30% of 200= 200(1 + 30%)= 200 (1 + 0.3)= 200 x 1.3= 260

**multiplying Factor**corresponding to 30%.

**MF**corresponding to 20% increase ?

**1.2**

**MF**corresponding to 3% decrease?

**0.97**

### Lets move towards another perspective of MF.

**33.33% more than 51.**

**Percent of a percent **

What is 10% of 20%?(10/100) x (20/100) = 0.1 x 0.2 = 0.02.

What is 10% of 20% of 40% ?(10/100) x (20/100) x 40% = 0.02 x 40% = 0.8%

**BASE**in this case ???????? You can reply in comments.

Comments awaited below in comment section:

**Books to be referred for questions and concept : CSAT**

Books to be referred questions and concept : CAT/MBA

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Really great article, sir.

nice article…

great going sir… nice article

Great going nice articles sir….

How does multiplying factor help in calculations ??

Wow nice article…. Please write an article on mixtures…