Respuesta :

Step-by-step explanation:

Selling price = Rs.80

Cost price = Rs.100

here, CP > SP

Now...

Loss ( L ) = CP - SP

= RS.100 - 80

= Rs.20

Now...

[tex]loss \: percent \: = \frac{loss}{CP} \times 100%[/tex]

[tex] = \frac{2000}{100} \\ [/tex]

= 20 %