Percentage

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Percentage -  According to mathematics, a percentage is a number or ratio expressed as a fraction of 100. It is often denoted by using the percent sign, "%" . 
Percentage formula - 
Percentage = (Obtained marks/Total      
                         marks)×100
Example :-  3/5 ×100 = 0.60×100 = 60% =                                  60percent
About Percentage -
1.10% is equal to 1/10 fraction
2. 20% is equivalent to ⅕ fraction
3. 25% is equivalent to ¼ fraction
4. 50% is equivalent to ½ fraction
5. 75% is equivalent to ¾ fraction
6. 90% is equivalent to 9/10 fraction
Points to remember :-
1. A percentage is a dimensionless number, it has no unit of measurement. 

Practice Questions -
Q1. Convert as a fraction and as a decimal : 
 40%
Q2. Express the ratio 4:5 as a percentage.
Q3. Find 30% of ₹800.
Q4. If 10% of a number is 45, then find the number?

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