$199 MP3 player; 15% discount
Divide $199 into 100 parts, then take 85 of those parts to get your answer...199 / 100 = 1.99-------1.99 x 85= (2.00-0.01) x 85= 2 x 85 - 0.85= 2 x (80 + 5) - 0.85= 160 + 10 - 0.85= 170 - 0.85= 169.15-----------Answer:$169.15