I’ve been struggling with this question since yesterday and I really need help, may you please help me

Answer:
Coupon A gives the lower price.
The price with coupon A is $3.40 less than the price with coupon B.
Step-by-step explanation:
Coupon A:
20% of 57 = (20*57)/100 = 11.4
57 - 11.4 = $45.60
Coupon B:
57 - 8 = $49