Thursday, January 31, 2013

Ratios


Ratio is one of the most important concepts in mathematics. Ratio is used to make comparison between two values in mathematics. Ratio in math is represented by colon sign (:). Ratio in words is represented with “is to”. For example: 6 pillows for kids : 3 kids. This expressional can be written or said in word as 6 pillows for kids are to 3 kids.  Ratio can be written in several ways. Let’s have a look at the same in this post along with relevant examples. .

Ratio as a fraction: Ratio can be used as a fraction. For example:
7 apples / 2 kids
13 baby seating chair / 4 kids
30 bed / 2 rooms
Ratio using the word to: Ratio as mentioned above cam be used with the word “is to” or “to”.

For example:
8 baby seating chair is to 2 kids. Therefore each kid will get 4 baby seating chair .
Mohan will buy 3 baby beds online for his 3 nephews. Here, 3 baby beds online is to 3 nephews.
Shreya will buy 5 baby beds online and 2 baby beds from market. Therefore, 5 are to 2.
Ratio using colon: Ratio using colon is the most commonly used form of ratio. It is used to separate two or more values. For example:
8 apples: 4 kids
32: 16: 8: 4: 2
16 boys: 8 girls in the class.
If we multiply each value in a ratio with a non-zero number will result an equal ratio. For example: 2: 4 = 1: 2; 16: 8 = 2: 1; 45: 9 = 5: 1 and so on. Here, 2: 4 and 1: 2 can be referred as equal ratios.
These are some basics about ratio and its usage in mathematics.

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