PERCENTAGE

                                                                         PERCENTAGE

                                               

                Per cent means per hundred or for every hundred. The symbol % is used to denote per cent, i.e., 48 marks out of 100 is 48%.

                A fraction with denominator 100 such as  is called a percent. The numerator tells the percentage.

To convert –

      (i) A fraction into a per cent, multiply the fraction by 100, e.g.,

     (ii) A ratio into a per cent, write it as a fraction and multiply the fraction by 100,

                 e.g.-

     (iii) A decimal into a per cent, multiply by 100, i.e., shift the decimal point two places to the right,

                 e.g.- 0.025 =(0.025 )% = 2.5%

     (iv) A per cent into a fraction, drop the per cent symbol (%) and divide by 100,

                 e.g.- 40% = .

(v) A per cent into a ratio, drop the per cent symbol and form a ratio with the number obtained after dropping             the symbol as the first term and 100 as the second term, e.g., 65% =

     (vi) A per cent into a decimal, drop per cent symbol and shift the decimal point two places to left,

                          e.g.- 95% = 0.95, 4.35% = 0.0435.

To find what per cent the first number is of second,

                Divide the first number by the second number and multiply the result by 100. First ensure that the numbers are in the same units, i.e., 3 hours as a percentage of

2 days   

                                Increase % =

                                Decrease % =

                                Error % =