I have no idea what to do. (It’s #15 part A btw) please help me!

Answer:
Bike A. $190.00
Purchase Price:
$380
Discount:
(380 x 50)/100 = $190.00
Final Price:
380 - 190.00 = $190.00
Bike B. $212.00
Part 1.) Purchase Price:
$380
Discount:
(380 x 30)/100 = $114.00
Final Price:
380 - 114.00 = $266.00
Part 2.) Purchase Price:
$266
Discount:
(266 x 20)/100 = $53.20
Final Price:
266 - 53.20 = $212.80