Respuesta :

Answer:

86.4%

Explanation:

the original marked price is m

then with a sales discount of 20%

the (pre-sales tax) sale price is 100%−20%=80% of 

The post-sales tax price is the pre-sales tax price plus 8%,

that is the post-sales tax price is 108%=1.08 of the pre-sales tax price.

Therefore the final cost (i.e. the post-tax price) is

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