Answer:
$352
Step-by-step explanation:
first discount = 550 : 2 = $275
Second discount:
10 : 100 = x : 275
x = (2750/100) = $27,50
275 - 27,50 = $247,50
third discount
20 : 100 = x: 247,50
x = (247.50*20)/100 = $49,50
247,50 - 49,50 = $198 (final price)
total discount = 550 - 198 = $352
