rate me 1-10 my broter took a pic of me wen i was lookin at a spider on da wall minutes before i... ran i jot da raid

An electronics store is running a promotion where for every video game purchased, the customer receives a coupon upon checkout to purchase a second game at a 50% discount. the coupons expire in one year. the store normally recognized a gross profit margin of 40% of the selling price on video games. how would the store account for a purchase using the discount coupon?