



 
Hi Eunice, I would think about how you would calculate the discount if you knew the price. If the price of the printer was $\$P$ then, since the discount is $15\%$ the discount would be $15\%$ of $\$P.$ But you know the discount is $\$550$ and hence \[0.15 \times \$P = \$550.\] Solve for $\$P.$ Penny  


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