PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo4. Conversion of ratio into per cent
We can convert the ratio into a percentage using the following method.
Example:
(i) \(a:b\)
(ii) \(3:8\)
5. Conversion of per cent into decimal
To convert the per cent to decimal, first change it to a fraction by dividing it by \(1000\) and remove the \(\%\) sign. Then put the decimal point accordingly.
\(a\%\) \(= a/100\) \(= 0.0a\)
(per cent) (fraction) (decimal)
Example:
(i) 20\(\%\)
\(=\)
\(=\) 0.2
(ii) 72\(\%\)
\(=\)
\(=\) 0.72\( \)
(iii)
\(=\)
\(=\) 0.006\( \)
6. Conversion of decimal into a per cent
To convert decimal into a per cent, change it to fraction to remove decimal and then multiply it by \(100\) and put the \(\%\) sign.
Example:
(i) 10.8
\(=\)
\(=\)
\(=\) 1080\(\%\)
(ii) 0.03
\(=\)
\(=\)
\(=\) 3\(\%\)
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