The discount given on the pair of shoes was 14.28%
Given that:
The cost price of shoes without applying the coupon is $84
The cost price of shoes after applying the coupon is $72
To calculate the percentage of discount, firstly we'll calculate discount and then after we will calculate the percentage based on the cost price.
Calculations:
Discount = Cost without coupon - Cost after applying Coupon
[tex]\: \rm Discount = 84 - 72 \: \rm dollars = \$12[/tex]
The discount percentage can be calculated as:
[tex]\: \rm discount \% = \dfrac{12 \times 100}{84} = 14.28\%[/tex]
Thus, the discount given on the pair of shoes was 14.28%
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