WEEK TWO

TOPIC: SIMPLE PROBLEMS ON PERCENTAGES

Percentages are fractions with 100 as a denominator

EXAMPLE 1

Change the following fractions to percentages

1. ^2/₅   =  ²/₅ of 100 = ^2/₅  ×  100 = 200  = 40%

                                                  5              

EXAMPLE 2   

Change these percentages to fractions

1. 75% = 75   = 15 = 3    

           100     20    4

EXAMPLE 3                           

Change 7 ½% to fractions in their lowest terms

Solution

7 ½ % = 7 ½ out of 100

            = 15/2 × 1/100

            = (15 × 1) ÷ 200

            = 15 ÷ 200 = 3/40