Given:
Original price of coat = $45
Coupon options:
• $20 off one purchase of $40 or more
,
• 40% off any purchase
Let's find the coupon which is a better deal.
We have the following:
• Coupon 1:
$20 off one purchase of $40 or more.
$45 - $20 = $25
Using this coupon, you will pay $25 for the coat
This coupon will help save $20
• Coupon 2:
40% off any purchase

Cost = $45 - $18 = $27
Using this coupon, you will pay $27 for the coat.
This coupon will save $18
Therefore, the better deal is the coupon with $20 off one ppurchase or more.