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Answer :

Let:

Op = Original price

Sp = Sale price

r = Discount

Express the discount percentage as a decimal:

45% = 45/100 = 0.45

The sale price will be given by:

[tex]\begin{gathered} Sp=Op-0.45Op \\ where \\ Op=27 \\ so\colon \\ Sp=27-12.5 \\ Sp=14.85 \end{gathered}[/tex]

$14.85