Q : 1     Express as rupees using decimals.

        (a) 5 paise     (b) 75 paise     (c) 20 paise     (d) 50 rupees 90 paise     (e) 725 paise 

Answers (1)

As we know that 

1 rupee = 100 paise

1\:paise=\frac{1}{100}\:rupees

So

 (a) 5 paise

     =5\times\frac{1}{100}=\frac{5}{100}=0.05\:rupees    

(b) 75 paise

      =75\times\frac{1}{100}=\frac{75}{100}=0.75\:rupees    

(c) 20 paise  

      =20\times\frac{1}{100}=\frac{20}{100}=0.20\:rupees   

(d) 50 rupees 90 paise 

     =50+90\times\frac{1}{100}=50+\frac{90}{100}=50+0.9=50.9\:rupees   

(e) 725 paise 

=725\times\frac{1}{100}=\frac{725}{100}=7.25\:rupees

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