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How to find a percentage of a percentage of a number easily?

For how to find a percentage of a percentage of a number easily, you solve the percent question in two steps.

a)      Multiple the numbers given in the percentage question
b)      Place decimal point after counting percent symbol (%) in the question

Example1

What is 20% of 20% of 20?

Solution

Multiply 20 x20 x 20 = 8000

See percent symbol (%) has been used 2 times in percent question. It means [1/100] x [1/100]. That is one % symbol means 2 zero whereas, 2 % symbol means 4 zeros. These 4 zeros will determine position of decimal point. Now start counting from right of 8000 and place decimal point after 4th digit. The answer will be 0.8000 or 0.8

Example 2

Find 30% of 40% of 50

Solution

Multiply 30 x 40 x 50 = 60000

Now count the Percent symbol (%) in percent question. Their number is 2. It means 4 zeros. Thus start counting from right of 60000 and place decimal point after 4th digit. It will look like 6.0000. So answer is 6.

 

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