The final sale price of phone after mark-down of 15% is $169.15
The selling price is defined as a price after the original price has been increased or decraesed.
Original price was $199.
Marked down 15% ==$199x 0.15 = $29.85
Final sale price after mark-down of 15% = $199 - $29.85 = $169.15
Hence, the final sale price of phone after mark-down of 15% is $169.15
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