Answer:
$15 off any ring
Explanation:
The original price of the gold ring = $40.
Coupon 1: $15 off any ring
[tex]\text{Sales Price}=40-15=\$25[/tex]Coupon 2: 30% off any purchase
[tex]\begin{gathered} \text{ Sales Price}=40-(30\%\text{ of 40\rparen} \\ =40-(0.3\times40) \\ =40-12 \\ =\$28 \end{gathered}[/tex]We see that the sales price for Coupon 1 is lower, therefore, the coupon "$15 off any ring " gives a better deal.